@@ -108,10 +108,15 @@
 }
 
 #if (!defined(HAVE_GMTIME_R) || !defined(HAVE_LOCALTIME_R)) && \
     defined(OF_HAVE_THREADS)
 static OFMutex *mutex;
+
+OF_DESTRUCTOR()
+{
+	[mutex release];
+}
 #endif
 
 #ifdef OF_WINDOWS
 static __time64_t (*func__mktime64)(struct tm *);
 #endif