diff --git a/lib/main.js b/lib/main.js
index 248bd548..549e858c 100644
--- a/lib/main.js
+++ b/lib/main.js
@@ -114,7 +114,7 @@ function run() {
             let extMatchRegexForm = "";
             if (extMatching) {
                 if (extension === "") {
-                    extMatchRegexForm = "\.(tar.gz|zip|tgz|jjj)";
+                    extMatchRegexForm = "\.(tar.gz|zip|tgz)";
                     core.info(`==> Using default file extension matching: ${extMatchRegexForm}`);
                 }
                 else {