diff --git a/programs/test/generate_cpp_dummy_build.sh b/programs/test/generate_cpp_dummy_build.sh
index a4f48e2aa..fb0743db9 100755
--- a/programs/test/generate_cpp_dummy_build.sh
+++ b/programs/test/generate_cpp_dummy_build.sh
@@ -21,7 +21,7 @@ set -e
 export LC_ALL=C
 
 print_cpp () {
-  cat <<'EOF'
+    cat <<'EOF'
 /* Automatically generated file. Do not edit.
  *
  *  This program is a dummy C++ program to ensure Mbed TLS library header files
@@ -58,7 +58,7 @@ EOF
     esac
   done
 
-  cat <<'EOF'
+    cat <<'EOF'
 
 int main()
 {
@@ -71,14 +71,14 @@ EOF
 }
 
 if [ -d include/mbedtls ]; then
-  :
+    :
 elif [ -d ../include/mbedtls ]; then
-  cd ..
+    cd ..
 elif [ -d ../../include/mbedtls ]; then
-  cd ../..
+    cd ../..
 else
-  echo >&2 "This script must be run from an Mbed TLS source tree."
-  exit 3
+    echo >&2 "This script must be run from an Mbed TLS source tree."
+    exit 3
 fi
 
 print_cpp >"${1:-programs/test/cpp_dummy_build.cpp}"