diff --git a/info.xml b/info.xml
index dd368605bf75a4e9476881205a3c97b787d167b3..808978f4c83571bfaed73d6da474d333ed32ad24 100644
--- a/info.xml
+++ b/info.xml
@@ -33,6 +33,7 @@
     <format>22.05.2</format>
   </civix>
   <classloader>
+    <psr0 prefix="CRM_" path="."/>
     <psr4 prefix="Civi\" path="Civi"/>
   </classloader>
   <mixins>