diff --git a/src/usr/local/bin/validate_workflow.sh b/src/usr/local/bin/validate_workflow.sh
index 69bad62a17857b50f09ca2c4621d0a2819000218..910db0fe7b91730c42aa1145fd384ed290b6386f 100755
--- a/src/usr/local/bin/validate_workflow.sh
+++ b/src/usr/local/bin/validate_workflow.sh
@@ -345,7 +345,7 @@ get_cli_args() {
             exit 1
         fi
         if [[ ! -f "${FILE_NAME}" ]]; then
-          error "filename '$FILE_NAME' for param --single-file does not exist!"
+          error "filename '${FILE_NAME}' for param --single-file does not exist!"
           exit 1
         fi
       else