diff --git a/C/init.c b/C/init.c
index ace763e6d..fac1ad66f 100644
--- a/C/init.c
+++ b/C/init.c
@@ -450,7 +450,8 @@ static Opdef    Ops[] = {
   {"/", yfx, 400},
   {"<<", yfx, 400},
   {">>", yfx, 400},
-  {"mod", xfx, 300},
+  {"mod", yfx, 400},
+  {"rem", yfx, 400},
   {"//", yfx, 400},
   {"**", xfx, 200},
   {"^", xfy, 200}