diff --git a/src/tasks/WasmAppBuilder/PInvokeTableGenerator.cs b/src/tasks/WasmAppBuilder/PInvokeTableGenerator.cs
index 825de67d6e2704..2fd776695725bc 100644
--- a/src/tasks/WasmAppBuilder/PInvokeTableGenerator.cs
+++ b/src/tasks/WasmAppBuilder/PInvokeTableGenerator.cs
@@ -268,7 +268,7 @@ private void EmitNativeToInterp(StreamWriter w, List<PInvokeCallback> callbacks)
             sb.Append($" (*WasmInterpEntrySig_{cb_index}) (");
             int pindex = 0;
             if (method.ReturnType.Name != "Void") {
-                sb.Append("int");
+                sb.Append("int*");
                 pindex++;
             }
             foreach (var p in method.GetParameters()) {