diff --git a/src/sim65816.c b/src/sim65816.c
index db78638..536e666 100644
--- a/src/sim65816.c
+++ b/src/sim65816.c
@@ -33,7 +33,7 @@ extern char g_config_gsplus_screenshot_dir[];
 extern void get_cwd(LPTSTR buffer, int size);
 #endif
 
-#ifndef ENABLE_DEBUGGER
+#ifndef GSPLUS_DEBUGGER
 int g_dbg_step = 0;
 int g_dbg_enable_port = 0;