diff --git a/composer.json b/composer.json
index 77a137ed698a5083772b8140fe270589b96667bb..90a1ddffc215bec6702c6ca69f29868b6f308e97 100644
--- a/composer.json
+++ b/composer.json
@@ -21,7 +21,7 @@
     },
     "autoload-dev": {
         "psr-4": {
-            "SimpleSAML\\Test\\Module\\accounting\\": "tests/src"
+            "SimpleSAML\\Test\\Module\\accounting\\": "tests/src/"
         }
     },
     "require": {