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