diff --git a/lib/sl/sl_locl.h b/lib/sl/sl_locl.h
index a5b8d12b1..081703273 100644
--- a/lib/sl/sl_locl.h
+++ b/lib/sl/sl_locl.h
@@ -43,6 +43,5 @@
 #include <string.h>
 
 #include <roken.h>
-#include <protos.h>
 
 #include <sl.h>