diff --git a/src/tasks/WasmAppBuilder/PInvokeTableGenerator.cs b/src/tasks/WasmAppBuilder/PInvokeTableGenerator.cs
index 402325b1275ff3..4a29b47666e94d 100644
--- a/src/tasks/WasmAppBuilder/PInvokeTableGenerator.cs
+++ b/src/tasks/WasmAppBuilder/PInvokeTableGenerator.cs
@@ -179,7 +179,7 @@ private string CEntryPoint(PInvoke pinvoke)
         if (pinvoke.WasmLinkage)
         {
             // We mangle the name to avoid collisions with symbols in other modules
-            return _fixupSymbolName($"{pinvoke.Module}_{pinvoke.EntryPoint}");
+            return _fixupSymbolName($"{pinvoke.Module}#{pinvoke.EntryPoint}");
         }
         return _fixupSymbolName(pinvoke.EntryPoint);
     }