diff --git a/consensus/src/rpc/nimbus_rpc.rs b/consensus/src/rpc/nimbus_rpc.rs
index ddf5a00..224af87 100644
--- a/consensus/src/rpc/nimbus_rpc.rs
+++ b/consensus/src/rpc/nimbus_rpc.rs
@@ -53,7 +53,7 @@ pub struct NimbusRpc {}
 
 #[wasm_bindgen]
 extern "C" {
-    #[wasm_bindgen(js_namespace = window)]
+    #[wasm_bindgen(js_namespace = self)]
     fn consensus_rpc_handler(data: JsValue) -> Promise;
 }
 
diff --git a/execution/src/rpc/http_rpc.rs b/execution/src/rpc/http_rpc.rs
index 8f8e90c..a24d7e1 100644
--- a/execution/src/rpc/http_rpc.rs
+++ b/execution/src/rpc/http_rpc.rs
@@ -27,7 +27,7 @@ use wasm_bindgen_futures::JsFuture;
 
 #[wasm_bindgen]
 extern "C" {
-    #[wasm_bindgen(js_namespace = window)]
+    #[wasm_bindgen(js_namespace = self)]
     fn execution_rpc_handler(data: JsValue) -> Promise;
 }