diff --git a/example/blink/main.c b/example/blink/main.c
index 0a38069..b70a136 100644
--- a/example/blink/main.c
+++ b/example/blink/main.c
@@ -1,7 +1,7 @@
 /* missing type */
 
 typedef unsigned int uint32_t;
-
+void main(void);
 
 /* hardware configuration */