diff --git a/action.yml b/action.yml
index 3a2f6f1b..b16f8277 100644
--- a/action.yml
+++ b/action.yml
@@ -142,7 +142,7 @@ runs:
 
         if [[ -n "$INPUT_FILES" ]]; then
           # shellcheck disable=SC2001
-          OUTPUT_ALL_MODIFIED_FILES=$(echo "$ALL_MODIFIED_FILES" | sed "s/$INPUT_SEPARATOR/ /g")
+          OUTPUT_ALL_MODIFIED_FILES=$(echo "$ALL_MODIFIED_FILES" | tr "$INPUT_SEPARATOR" " " | xargs)
           ALL_INPUT_FILES=$(echo "$INPUT_FILES" | tr "\n" " " | xargs)
           
           echo "Input files: ${ALL_INPUT_FILES[@]}"