--- linuxsampler/trunk/src/common/Mutex.h	2014/01/10 12:20:05	2500
+++ linuxsampler/trunk/src/common/Mutex.h	2014/01/10 13:53:19	2501
@@ -117,7 +117,7 @@
     LockGuard() : pm(NULL) {
     }
 
-    LockGuard(LockGuard& g) : pm(g.pm) {
+    LockGuard(const LockGuard& g) : pm(g.pm) {
         if (pm) pm->Lock();
     }