diff --git a/uisimulator/app.c b/uisimulator/app.c
index a263810c7e..6ba36e1601 100644
--- a/uisimulator/app.c
+++ b/uisimulator/app.c
@@ -24,10 +24,6 @@
 
 #include "tree.h"
 
-#ifdef SIMULATOR
-#include <stdio.h>
-#endif
-
 extern void tetris(void);
 
 #define LINE_HEIGHT 8