diff --git a/libraries/AP_HAL_F4Light/wirish/main.cxx b/libraries/AP_HAL_F4Light/wirish/main.cxx
index 7b593a3a08..7a53e00774 100644
--- a/libraries/AP_HAL_F4Light/wirish/main.cxx
+++ b/libraries/AP_HAL_F4Light/wirish/main.cxx
@@ -30,7 +30,7 @@ extern void init();
 
 // Force init to be called *first*, i.e. before static object allocation.
 // Otherwise, statically allocated objects that need libmaple may fail.
- __attribute__(( constructor )) void premain() ;
+ __attribute__(( constructor )) void premain();
 
 
  __attribute__(( constructor )) void premain(){}