diff --git a/frontend/src/components/ai-elements/prompt-input.tsx b/frontend/src/components/ai-elements/prompt-input.tsx
index 52a909cdd3..0bd0776904 100644
--- a/frontend/src/components/ai-elements/prompt-input.tsx
+++ b/frontend/src/components/ai-elements/prompt-input.tsx
@@ -1085,7 +1085,7 @@ export const PromptInputSubmit = ({
   if (status === "submitted") {
     Icon = <Loader2Icon className="size-4 animate-spin" />;
   } else if (status === "streaming") {
-    Icon = <SquareIcon className="size-4" />;
+    Icon = <SquareIcon className="size-4 fill-current" />;
   } else if (status === "error") {
     Icon = <XIcon className="size-4" />;
   }