diff --git a/sys/embunit/CompilerOutputter.c b/sys/embunit/CompilerOutputter.c
index 3e5baa2030..2f02183c73 100644
--- a/sys/embunit/CompilerOutputter.c
+++ b/sys/embunit/CompilerOutputter.c
@@ -35,10 +35,9 @@
 #include <stdio.h>
 #include "CompilerOutputter.h"
 
-static void CompilerOutputter_printHeader(OutputterRef self,TestRef test)
+static void CompilerOutputter_printHeader(OutputterRef self)
 {
     (void)self;
-    (void)test;
 }
 
 static void CompilerOutputter_printStartTest(OutputterRef self,TestRef test)