diff --git a/dist/index.js b/dist/index.js
index 142be1b8..371bb5da 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -2761,7 +2761,7 @@ async function addExtensionDarwin(extension_csv, version) {
         let command = '';
         switch (true) {
             // match pre-release versions
-            case /.*-(beta|alpha|devel|snapshot)/.test(version_extension):
+            case /.+-(beta|alpha|devel|snapshot)/.test(extension):
                 script +=
                     '\nadd_unstable_extension ' +
                         extension_name +
@@ -2820,7 +2820,7 @@ async function addExtensionWindows(extension_csv, version) {
         const version_extension = version + extension;
         switch (true) {
             // match pre-release versions
-            case /.*-(beta|alpha|devel|snapshot)/.test(version_extension):
+            case /.+-(beta|alpha|devel|snapshot)/.test(extension):
                 script += '\nAdd-Extension ' + extension_name + ' ' + stability;
                 break;
             // match 5.6mysql, 5.6mysqli, 5.6mysqlnd
@@ -2880,7 +2880,7 @@ async function addExtensionLinux(extension_csv, version, pipe) {
         let command = '';
         switch (true) {
             // match pre-release versions
-            case /.*-(beta|alpha|devel|snapshot)/.test(version_extension):
+            case /.+-(beta|alpha|devel|snapshot)/.test(extension):
                 script +=
                     '\nadd_unstable_extension ' +
                         extension_name +
diff --git a/src/extensions.ts b/src/extensions.ts
index 5ee65340..9eff5119 100644
--- a/src/extensions.ts
+++ b/src/extensions.ts
@@ -21,7 +21,7 @@ export async function addExtensionDarwin(
     let command = '';
     switch (true) {
       // match pre-release versions
-      case /.*-(beta|alpha|devel|snapshot)/.test(version_extension):
+      case /.+-(beta|alpha|devel|snapshot)/.test(extension):
         script +=
           '\nadd_unstable_extension ' +
           extension_name +
@@ -85,7 +85,7 @@ export async function addExtensionWindows(
     const version_extension: string = version + extension;
     switch (true) {
       // match pre-release versions
-      case /.*-(beta|alpha|devel|snapshot)/.test(version_extension):
+      case /.+-(beta|alpha|devel|snapshot)/.test(extension):
         script += '\nAdd-Extension ' + extension_name + ' ' + stability;
         break;
       // match 5.6mysql, 5.6mysqli, 5.6mysqlnd
@@ -149,7 +149,7 @@ export async function addExtensionLinux(
     let command = '';
     switch (true) {
       // match pre-release versions
-      case /.*-(beta|alpha|devel|snapshot)/.test(version_extension):
+      case /.+-(beta|alpha|devel|snapshot)/.test(extension):
         script +=
           '\nadd_unstable_extension ' +
           extension_name +