diff --git a/entrypoint.sh b/entrypoint.sh
index 904aa0f..598f614 100755
--- a/entrypoint.sh
+++ b/entrypoint.sh
@@ -10,11 +10,12 @@
 echo "Processing event '$GITHUB_EVENT_NAME'"
 echo "List of files with absent license:"
 echo "==================================="
-if [[ -n "$INPUT_INPUT_FILES" ]]; then
-	err=0
+IFS=' '
+if [ -n "$INPUT_INPUT_FILES" ]; then
+    err=0
     for file in $INPUT_INPUT_FILES; do
         echo /app/addlicense -check "$1" "$file" | sh
-        if [[ $? -ne 0]]; then
+        if [ "$?" -ne 0 ]; then
             err=$?
         fi
     done