1 files changed, 2 insertions, 2 deletions
diff --git a/src/zx81.h b/src/zx81.h
index 037363f..855c4a5 100644
--- a/src/zx81.h
+++ b/src/zx81.h
@@ -24,8 +24,8 @@
 
 */
 
-#ifndef EZX81ZX81H
-#define EZX81ZX81H "$Id$"
+#ifndef EZX81_ZX81H
+#define EZX81_ZX81H "$Id$"
 
 #include "z80.h"
 #include "SDL.h"