diff --git a/src/cluster.c b/src/cluster.c
index fdd6e88bd88..0ac90c03e4b 100644
--- a/src/cluster.c
+++ b/src/cluster.c
@@ -5844,7 +5844,7 @@ void clusterReplyMultiBulkSlots(client * c) {
         }
     }
 
-    serverAssert(c, num_masters == 0);
+    serverAssert(num_masters == 0);
 }
 
 sds genClusterInfoString(void) {