diff --git a/app/pdump/meson.build b/app/pdump/meson.build
index db1fcadbfe..fb282bba1f 100644
--- a/app/pdump/meson.build
+++ b/app/pdump/meson.build
@@ -2,9 +2,9 @@
 # Copyright(c) 2018 Intel Corporation
 
 if is_windows
-	build = false
-	reason = 'not supported on Windows'
-	subdir_done()
+    build = false
+    reason = 'not supported on Windows'
+    subdir_done()
 endif
 
 sources = files('main.c')
diff --git a/app/proc-info/meson.build b/app/proc-info/meson.build
index 82ed05bb0b..1062e0ef86 100644
--- a/app/proc-info/meson.build
+++ b/app/proc-info/meson.build
@@ -2,9 +2,9 @@
 # Copyright(c) 2018 Intel Corporation
 
 if is_windows
-	build = false
-	reason = 'not supported on Windows'
-	subdir_done()
+    build = false
+    reason = 'not supported on Windows'
+    subdir_done()
 endif
 
 sources = files('main.c')
diff --git a/app/test-acl/meson.build b/app/test-acl/meson.build
index 14d36b33e9..c0dc4b221a 100644
--- a/app/test-acl/meson.build
+++ b/app/test-acl/meson.build
@@ -2,9 +2,9 @@
 # Copyright(c) 2019 Intel Corporation
 
 if is_windows
-	build = false
-	reason = 'not supported on Windows'
-	subdir_done()
+    build = false
+    reason = 'not supported on Windows'
+    subdir_done()
 endif
 
 sources = files('main.c')
diff --git a/app/test-bbdev/meson.build b/app/test-bbdev/meson.build
index a726a5b3fa..76d4c26999 100644
--- a/app/test-bbdev/meson.build
+++ b/app/test-bbdev/meson.build
@@ -2,9 +2,9 @@
 # Copyright(c) 2018 Intel Corporation
 
 if is_windows
-	build = false
-	reason = 'not supported on Windows'
-	subdir_done()
+    build = false
+    reason = 'not supported on Windows'
+    subdir_done()
 endif
 
 sources = files(
@@ -24,5 +24,5 @@ if dpdk_conf.has('RTE_BASEBAND_ACC100')
     deps += ['baseband_acc100']
 endif
 if dpdk_conf.has('RTE_LIBRTE_PMD_BBDEV_LA12XX')
-	deps += ['baseband_la12xx']
+    deps += ['baseband_la12xx']
 endif
diff --git a/app/test-cmdline/meson.build b/app/test-cmdline/meson.build
index 0898821200..6027f67919 100644
--- a/app/test-cmdline/meson.build
+++ b/app/test-cmdline/meson.build
@@ -2,9 +2,9 @@
 # Copyright(c) 2019 Intel Corporation
 
 if is_windows
-	build = false
-	reason = 'not supported on Windows'
-	subdir_done()
+    build = false
+    reason = 'not supported on Windows'
+    subdir_done()
 endif
 
 sources = files('commands.c', 'cmdline_test.c')
diff --git a/app/test-compress-perf/meson.build b/app/test-compress-perf/meson.build
index f29c6ee863..34dcfe5b8e 100644
--- a/app/test-compress-perf/meson.build
+++ b/app/test-compress-perf/meson.build
@@ -2,9 +2,9 @@
 # Copyright(c) 2018 Intel Corporation
 
 if is_windows
-	build = false
-	reason = 'not supported on Windows'
-	subdir_done()
+    build = false
+    reason = 'not supported on Windows'
+    subdir_done()
 endif
 
 sources = files(
diff --git a/app/test-crypto-perf/meson.build b/app/test-crypto-perf/meson.build
index ef3582a87c..7b02b518f0 100644
--- a/app/test-crypto-perf/meson.build
+++ b/app/test-crypto-perf/meson.build
@@ -2,9 +2,9 @@
 # Copyright(c) 2018 Intel Corporation
 
 if is_windows
-	build = false
-	reason = 'not supported on Windows'
-	subdir_done()
+    build = false
+    reason = 'not supported on Windows'
+    subdir_done()
 endif
 
 sources = files(
diff --git a/app/test-eventdev/meson.build b/app/test-eventdev/meson.build
index 17be360677..ab8769c755 100644
--- a/app/test-eventdev/meson.build
+++ b/app/test-eventdev/meson.build
@@ -2,9 +2,9 @@
 # Copyright(c) 2017 Cavium, Inc
 
 if is_windows
-	build = false
-	reason = 'not supported on Windows'
-	subdir_done()
+    build = false
+    reason = 'not supported on Windows'
+    subdir_done()
 endif
 
 sources = files(
diff --git a/app/test-fib/meson.build b/app/test-fib/meson.build
index 3360ea02b0..eb36772cf3 100644
--- a/app/test-fib/meson.build
+++ b/app/test-fib/meson.build
@@ -2,9 +2,9 @@
 # Copyright(c) 2019 Intel Corporation
 
 if is_windows
-	build = false
-	reason = 'not supported on Windows'
-	subdir_done()
+    build = false
+    reason = 'not supported on Windows'
+    subdir_done()
 endif
 
 sources = files('main.c')
diff --git a/app/test-flow-perf/meson.build b/app/test-flow-perf/meson.build
index a33cad9078..766e4516ad 100644
--- a/app/test-flow-perf/meson.build
+++ b/app/test-flow-perf/meson.build
@@ -2,9 +2,9 @@
 # Copyright(c) 2020 Mellanox Technologies, Ltd
 
 if is_windows
-	build = false
-	reason = 'not supported on Windows'
-	subdir_done()
+    build = false
+    reason = 'not supported on Windows'
+    subdir_done()
 endif
 
 sources = files(
diff --git a/app/test-pipeline/meson.build b/app/test-pipeline/meson.build
index 7d123e32fb..3add6b637b 100644
--- a/app/test-pipeline/meson.build
+++ b/app/test-pipeline/meson.build
@@ -2,9 +2,9 @@
 # Copyright(c) 2019 Intel Corporation
 
 if is_windows
-	build = false
-	reason = 'not supported on Windows'
-	subdir_done()
+    build = false
+    reason = 'not supported on Windows'
+    subdir_done()
 endif
 
 sources = files(
diff --git a/app/test-regex/meson.build b/app/test-regex/meson.build
index 02b101980e..e3ba060e55 100644
--- a/app/test-regex/meson.build
+++ b/app/test-regex/meson.build
@@ -2,9 +2,9 @@
 # Copyright 2020 Mellanox Technologies, Ltd
 
 if is_windows
-	build = false
-	reason = 'not supported on Windows'
-	subdir_done()
+    build = false
+    reason = 'not supported on Windows'
+    subdir_done()
 endif
 
 sources = files('main.c')
diff --git a/app/test-sad/meson.build b/app/test-sad/meson.build
index 3d15727a01..a50616a9c7 100644
--- a/app/test-sad/meson.build
+++ b/app/test-sad/meson.build
@@ -2,9 +2,9 @@
 # Copyright(c) 2019 Intel Corporation
 
 if is_windows
-	build = false
-	reason = 'not supported on Windows'
-	subdir_done()
+    build = false
+    reason = 'not supported on Windows'
+    subdir_done()
 endif
 
 sources = files('main.c')
diff --git a/app/test/meson.build b/app/test/meson.build
index 20f36a1803..3d9470df23 100644
--- a/app/test/meson.build
+++ b/app/test/meson.build
@@ -2,9 +2,9 @@
 # Copyright(c) 2017 Intel Corporation
 
 if is_windows
-	build = false
-	reason = 'not supported on Windows'
-	subdir_done()
+    build = false
+    reason = 'not supported on Windows'
+    subdir_done()
 endif
 
 if not get_option('tests')
diff --git a/config/meson.build b/config/meson.build
index 4cdf589e20..7073a9adff 100644
--- a/config/meson.build
+++ b/config/meson.build
@@ -322,47 +322,47 @@ endif
 
 max_lcores = get_option('max_lcores')
 if max_lcores == 'detect'
-	# discovery makes sense only for non-cross builds
-	if meson.is_cross_build()
-		error('Discovery of max_lcores is not supported for cross-compilation.')
-	endif
-	# overwrite the default value with discovered values
-	max_lcores = run_command(get_cpu_count_cmd).stdout().to_int()
-	min_lcores = 2
-	# DPDK must be built for at least 2 cores
-	if max_lcores < min_lcores
-		message('Found less than @0@ cores, building for @0@ cores'.format(min_lcores))
-		max_lcores = min_lcores
-	else
-		message('Found @0@ cores'.format(max_lcores))
-	endif
-	dpdk_conf.set('RTE_MAX_LCORE', max_lcores)
+    # discovery makes sense only for non-cross builds
+    if meson.is_cross_build()
+        error('Discovery of max_lcores is not supported for cross-compilation.')
+    endif
+    # overwrite the default value with discovered values
+    max_lcores = run_command(get_cpu_count_cmd).stdout().to_int()
+    min_lcores = 2
+    # DPDK must be built for at least 2 cores
+    if max_lcores < min_lcores
+        message('Found less than @0@ cores, building for @0@ cores'.format(min_lcores))
+        max_lcores = min_lcores
+    else
+        message('Found @0@ cores'.format(max_lcores))
+    endif
+    dpdk_conf.set('RTE_MAX_LCORE', max_lcores)
 elif max_lcores != 'default'
-	# overwrite the default value from arch_subdir with user input
-	dpdk_conf.set('RTE_MAX_LCORE', max_lcores.to_int())
+    # overwrite the default value from arch_subdir with user input
+    dpdk_conf.set('RTE_MAX_LCORE', max_lcores.to_int())
 endif
 
 max_numa_nodes = get_option('max_numa_nodes')
 if max_numa_nodes == 'detect'
-	# discovery makes sense only for non-cross builds
-	if meson.is_cross_build()
-		error('Discovery of max_numa_nodes not supported for cross-compilation.')
-	endif
-	# overwrite the default value with discovered values
-	max_numa_nodes = run_command(get_numa_count_cmd).stdout().to_int()
-	message('Found @0@ numa nodes'.format(max_numa_nodes))
-	dpdk_conf.set('RTE_MAX_NUMA_NODES', max_numa_nodes)
+    # discovery makes sense only for non-cross builds
+    if meson.is_cross_build()
+        error('Discovery of max_numa_nodes not supported for cross-compilation.')
+    endif
+    # overwrite the default value with discovered values
+    max_numa_nodes = run_command(get_numa_count_cmd).stdout().to_int()
+    message('Found @0@ numa nodes'.format(max_numa_nodes))
+    dpdk_conf.set('RTE_MAX_NUMA_NODES', max_numa_nodes)
 elif max_numa_nodes != 'default'
-	# overwrite the default value from arch_subdir with user input
-	dpdk_conf.set('RTE_MAX_NUMA_NODES', max_numa_nodes.to_int())
+    # overwrite the default value from arch_subdir with user input
+    dpdk_conf.set('RTE_MAX_NUMA_NODES', max_numa_nodes.to_int())
 endif
 
 # check that CPU and NUMA counts are set
 if not dpdk_conf.has('RTE_MAX_LCORE')
-	error('Number of CPU cores not specified.')
+    error('Number of CPU cores not specified.')
 endif
 if not dpdk_conf.has('RTE_MAX_NUMA_NODES')
-	error('Number of NUMA nodes not specified.')
+    error('Number of NUMA nodes not specified.')
 endif
 
 # set the install path for the drivers
diff --git a/devtools/check-meson.py b/devtools/check-meson.py
index 29f7887968..4b2338828d 100755
--- a/devtools/check-meson.py
+++ b/devtools/check-meson.py
@@ -8,6 +8,7 @@
 
 import sys
 import os
+import re
 from os.path import relpath, join
 from argparse import ArgumentParser
 
@@ -50,6 +51,8 @@ def check_indentation(filename, contents):
         code, comments = split_code_comments(line)
         if not code.strip():
             continue
+        if re.match('^ *\t', code):
+            print(f'Error parsing {filename}:{lineno}, got some tabulation')
         if code.endswith('files('):
             if infiles:
                 raise(f'Error parsing {filename}:{lineno}, got "files(" when already parsing files list')
diff --git a/drivers/compress/octeontx/meson.build b/drivers/compress/octeontx/meson.build
index cd8687fde3..3a29c3e609 100644
--- a/drivers/compress/octeontx/meson.build
+++ b/drivers/compress/octeontx/meson.build
@@ -2,9 +2,9 @@
 # Copyright(c) 2018 Cavium, Inc
 
 if not is_linux or not dpdk_conf.get('RTE_ARCH_64')
-	build = false
-	reason = 'only supported on 64-bit Linux'
-	subdir_done()
+    build = false
+    reason = 'only supported on 64-bit Linux'
+    subdir_done()
 endif
 
 sources = files('otx_zip.c', 'otx_zip_pmd.c')
diff --git a/drivers/crypto/cnxk/meson.build b/drivers/crypto/cnxk/meson.build
index 024109f7e9..23a1cc3aac 100644
--- a/drivers/crypto/cnxk/meson.build
+++ b/drivers/crypto/cnxk/meson.build
@@ -3,9 +3,9 @@
 #
 
 if not is_linux or not dpdk_conf.get('RTE_ARCH_64')
-	build = false
-	reason = 'only supported on 64-bit Linux'
-	subdir_done()
+    build = false
+    reason = 'only supported on 64-bit Linux'
+    subdir_done()
 endif
 
 sources = files(
diff --git a/drivers/crypto/qat/meson.build b/drivers/crypto/qat/meson.build
index b3b2d17258..544f481067 100644
--- a/drivers/crypto/qat/meson.build
+++ b/drivers/crypto/qat/meson.build
@@ -19,7 +19,7 @@ if dep.found()
             'qat_sym_hw_dp.c',
             'qat_sym_pmd.c',
             'qat_sym_session.c',
-	)
+    )
     qat_ext_deps += dep
     qat_cflags += '-DBUILD_QAT_SYM'
     qat_cflags += '-DBUILD_QAT_ASYM'
diff --git a/drivers/net/ice/meson.build b/drivers/net/ice/meson.build
index 0b86d74a49..be15a2ed02 100644
--- a/drivers/net/ice/meson.build
+++ b/drivers/net/ice/meson.build
@@ -71,6 +71,6 @@ sources += files('ice_dcf.c',
          'ice_dcf_vf_representor.c',
          'ice_dcf_ethdev.c',
          'ice_dcf_parent.c',
-	 'ice_dcf_sched.c')
+         'ice_dcf_sched.c')
 
 headers = files('rte_pmd_ice.h')
