diff --git a/src/globals/test-extensions.php b/src/globals/test-extensions.php
index 56489d84..1bba2f9a 100644
--- a/src/globals/test-extensions.php
+++ b/src/globals/test-extensions.php
@@ -159,7 +159,7 @@ if ($shared_extensions) {
         case 'ubuntu-24.04':
         case 'ubuntu-24.04-arm':
             putenv('SPC_TARGET=native-native-musl -dynamic');
-            if (getenv('SPC_TARGET') && !str_contains(getenv('SPC_TARGET'), '-musl')) {
+            if (getenv('SPC_TARGET') && str_contains(getenv('SPC_TARGET'), '-musl')) {
                 exec('sudo apt install musl -y');
             }
             if (getenv('SPC_TARGET')) {