diff --git a/include/setup.h b/include/setup.h
index 3622d0f8..27c91776 100644
--- a/include/setup.h
+++ b/include/setup.h
@@ -43,7 +43,7 @@
 
 #ifndef CH_CSTDIO
 #define CH_CSTDIO
-#include <cstdio>
+#include <stdio.h>
 #endif