diff --git a/src/doomdef.h b/src/doomdef.h
index 95f8df2ac..a3c62eeb2 100644
--- a/src/doomdef.h
+++ b/src/doomdef.h
@@ -131,6 +131,7 @@ extern char logfilename[1024];
 
 //#define DEVELOP // Disable this for release builds to remove excessive cheat commands and enable MD5 checking and stuff, all in one go. :3
 #ifdef DEVELOP
+#define PARANOIA // On by default for DEVELOP builds
 #define VERSIONSTRING "Development EXE"
 #define VERSIONSTRING_RC "Development EXE" "\0"
 // most interface strings are ignored in development mode.