diff --git a/src/t_set.c b/src/t_set.c
index 3823f1cbb..72743a6fd 100644
--- a/src/t_set.c
+++ b/src/t_set.c
@@ -1049,10 +1049,6 @@ void sinterstoreCommand(client *c) {
     sinterGenericCommand(c, c->argv+2, c->argc-2, c->argv[1], 0, 0);
 }
 
-#define SET_OP_UNION 0
-#define SET_OP_DIFF 1
-#define SET_OP_INTER 2
-
 void sunionDiffGenericCommand(client *c, robj **setkeys, int setnum,
                               robj *dstkey, int op) {
     robj **sets = zmalloc(sizeof(robj*)*setnum);