diff --git a/src/app/services/graphite/gfunc.js b/src/app/services/graphite/gfunc.js
index 6d1990d651e..2d8d19c2244 100644
--- a/src/app/services/graphite/gfunc.js
+++ b/src/app/services/graphite/gfunc.js
@@ -158,7 +158,12 @@ function (_, $) {
   addFuncDef({
     name: 'sumSeriesWithWildcards',
     category: categories.Combine,
-    params: [{ name: "node", type: "int" }],
+    params: [
+      { name: "node", type: "int" },
+      { name: "node", type: "int", optional: true },
+      { name: "node", type: "int", optional: true },
+      { name: "node", type: "int", optional: true }
+    ],
     defaultParams: [3]
   });