diff --git a/xplc/moduleloader.cc b/xplc/moduleloader.cc

index 02dd9a4..047d3bc 100644

--- a/xplc/moduleloader.cc

+++ b/xplc/moduleloader.cc

@@ -64,7 +64,7 @@ Module* Module::loadModule(const char* modulename) {

   switch(moduleinfo->version_major) {

 #ifdef UNSTABLE

-  case -1:

+  case -1u:

     /* nothing to do */

     break;

 #endif