diff --git a/firmware/system.c b/firmware/system.c
index 44655bd7d6..0c8c686388 100644
--- a/firmware/system.c
+++ b/firmware/system.c
@@ -306,7 +306,7 @@ void system_init(void)
 #elif CONFIG_CPU == MCF5249
 
 #define default_interrupt(name) \
-  extern __attribute__((weak,alias("UIE"))) void name (void);
+  extern __attribute__((weak,alias("UIE"))) void name (void)
 
 static const char* const irqname[] = {
     "", "", "AccessErr","AddrErr","IllInstr", "", "","",