diff --git a/C/init.c b/C/init.c
index 0a9d416e6..6d1ec9719 100644
--- a/C/init.c
+++ b/C/init.c
@@ -409,6 +409,7 @@ static Opdef    Ops[] = {
   {"rdiv", yfx, 400},
   {"*", yfx, 400},
   {"/", yfx, 400},
+  {"//", yfx, 400},
   {"<<", yfx, 400},
   {">>", yfx, 400},
   {"mod", yfx, 400},