diff --git a/src/lib/stores/configState.ts b/src/lib/stores/configState.ts
index 40f36f8..22c3e32 100644
--- a/src/lib/stores/configState.ts
+++ b/src/lib/stores/configState.ts
@@ -35,7 +35,7 @@ const store: Writable<ConfigState> = writable(
 
 function getBackendURL(): string {
     const state = get(store);
-    return `${window.location.protocol}://${state.comfyUIHostname}:${state.comfyUIPort}`
+    return `${window.location.protocol}//${state.comfyUIHostname}:${state.comfyUIPort}`
 }
 
 const configStateStore: WritableConfigStateStore =