diff --git a/action.yml b/action.yml
index 9e018dd..4c9ccb5 100644
--- a/action.yml
+++ b/action.yml
@@ -67,7 +67,7 @@ runs:
         fast_rmdir() {
           if [[ -d "$1" ]] && [[ -n "$1" ]] && [[ ! "$1" = "/" ]] && [[ ! "$1" = "~" ]]; then
             echo "Removing directory: $1"
-            sudo find "$1" -type f -size +${{ inputs.min-file-size }}k -delete -print | wc -l
+            sudo find "$1" -type f -size +${{ inputs.min-file-size || '0' }}k -delete -print | wc -l
           fi
         }