diff --git a/packages/elements/src/prompt-input.tsx b/packages/elements/src/prompt-input.tsx
index 412c846d..00305989 100644
--- a/packages/elements/src/prompt-input.tsx
+++ b/packages/elements/src/prompt-input.tsx
@@ -988,7 +988,7 @@ export const PromptInputTextarea = ({
         const submitButton = form?.querySelector(
           'button[type="submit"]'
         ) as HTMLButtonElement | null;
-        if (submitButton?.disabled) {
+        if (!submitButton || submitButton.disabled) {
           return;
         }