diff --git a/types.h b/types.h
index 53dba8c58..1ba624d81 100644
--- a/types.h
+++ b/types.h
@@ -48,7 +48,9 @@
 #endif
 
 // If defined, use copy protection [Default -> Defined]
-//#define COPYPROT
+#ifndef _DEBUG
+#define COPYPROT
+#endif
 
 // If defined, don't reload for debuggers [Default -> Undefined]
 // Note that with patch 1.03 the command line was hosed, this is required to pass arguments to the game