diff --git a/.travis.yml b/.travis.yml
index c31b814..a503f0e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -68,7 +68,7 @@ script:
   ./build.sh || exit 1;
   fi;
 
-- |  
+- |
   if [[ "$USE_DOCKER" == "TRUE" ]]; then
   if [[ "$USE_OPENMP" == "TRUE" ]]; then
   docker run -it -v $(pwd):/root/repo nnvmc/base /bin/bash -c "cd /root/repo/build && make test";
diff --git a/benchmark/run.sh b/benchmark/run.sh
index 2ce9906..f220260 100755
--- a/benchmark/run.sh
+++ b/benchmark/run.sh
@@ -1,6 +1,6 @@
 #!/bin/sh
 
-if [ "$1" == "" ]; then
+if [ "$1" = "" ]; then
   echo "Expected the name of the benchmark to run as first argument."
 else
   bench=$1
diff --git a/benchmark/run_prof.sh b/benchmark/run_prof.sh
index 2c1b8ba..6460068 100755
--- a/benchmark/run_prof.sh
+++ b/benchmark/run_prof.sh
@@ -1,8 +1,8 @@
 #!/bin/sh
 
-if [ "$1" == "" ]; then
+if [ "$1" = "" ]; then
   echo "Expected the name of the benchmark to run as first argument."
-elif [ "$2" == "" ]; then
+elif [ "$2" = "" ]; then
   echo "Expected the path of libprofiler.so as second argument."
 else
   bench=$1
diff --git a/build.sh b/build.sh
index 57bc635..e0335e4 100755
--- a/build.sh
+++ b/build.sh
@@ -4,7 +4,7 @@
 mkdir -p build && cd build
 cmake -DCMAKE_CXX_COMPILER="${CXX_COMPILER}" -DUSER_CXX_FLAGS="${CXX_FLAGS}" -DUSE_COVERAGE="${USE_COVERAGE}" -DUSE_OPENMP="${USE_OPENMP}" -DGSL_ROOT_DIR="${GSL_ROOT}" ..
 
-if [ "$1" == "" ]; then
+if [ "$1" = "" ]; then
   make -j$(nproc 2>/dev/null || sysctl -n hw.ncpu 2>/dev/null || getconf _NPROCESSORS_ONLN 2>/dev/null)
 else
   make -j$1