diff --git a/tools/converter.py b/tools/converter.py
index da590b4fde954693724459744edccaf568f21353..2e2d62be9c5e54402e8b96f8d7aee64348493718 100644
--- a/tools/converter.py
+++ b/tools/converter.py
@@ -35,8 +35,11 @@ from common import mace_check
 from common import MaceLogger
 from common import StringFormatter
 
+################################
+# set environment
+################################
+os.environ['TF_CPP_MIN_LOG_LEVEL'] = '2'
 
-os.environ['TF_CPP_MIN_LOG_LEVEL'] = '2' 
 ################################
 # common definitions
 ################################
@@ -1219,7 +1222,7 @@ def benchmark_model(flags):
 
 
 ################################
-# Parsing arguments
+# parsing arguments
 ################################
 def str2bool(v):
     if v.lower() in ('yes', 'true', 't', 'y', '1'):
diff --git a/tools/sh_commands.py b/tools/sh_commands.py
index 7533f77b3b2bab843f810f3f4f3424ba030e0e6a..ddbd7c6b107711421bfb67a745a368b40beeef38 100644
--- a/tools/sh_commands.py
+++ b/tools/sh_commands.py
@@ -1060,12 +1060,12 @@ def merge_libs(target_soc,
     which_sys = platform.system()
     if which_sys == "Linux":
         cmd = sh.Command("%s/toolchains/" % os.environ["ANDROID_NDK_HOME"] +
-                        "aarch64-linux-android-4.9/prebuilt/linux-x86_64/" +
-                        "bin/aarch64-linux-android-ar")
+                         "aarch64-linux-android-4.9/prebuilt/linux-x86_64/" +
+                         "bin/aarch64-linux-android-ar")
     elif which_sys == "Darwin":
         cmd = sh.Command("%s/toolchains/" % os.environ["ANDROID_NDK_HOME"] +
-                        "aarch64-linux-android-4.9/prebuilt/darwin-x86_64/" +
-                        "bin/aarch64-linux-android-ar")
+                         "aarch64-linux-android-4.9/prebuilt/darwin-x86_64/" +
+                         "bin/aarch64-linux-android-ar")
 
     cmd("-M", _in=mri_stream)