diff --git a/2004/vik2/Makefile b/2004/vik2/Makefile
index 38ec8078d..3450a81f7 100644
--- a/2004/vik2/Makefile
+++ b/2004/vik2/Makefile
@@ -38,7 +38,7 @@ include ../../var.mk
 
 # Common C compiler warnings to silence
 #
-CSILENCE=
+CSILENCE= -Wno-strict-prototypes
 
 # Common C compiler warning flags
 #