diff --git a/packages/frontend/src/components/MkSignin.password.vue b/packages/frontend/src/components/MkSignin.password.vue
index 13c93dd026..5dd833b591 100644
--- a/packages/frontend/src/components/MkSignin.password.vue
+++ b/packages/frontend/src/components/MkSignin.password.vue
@@ -25,7 +25,7 @@
 				<MkCaptcha v-if="instance.enableTurnstile" ref="turnstile" v-model="turnstileResponse" :class="$style.captcha" provider="turnstile" :sitekey="instance.turnstileSiteKey"/>
 			</div>
 
-			<MkButton type="submit" large primary rounded style="margin: 0 auto;" data-cy-signin-page-password-continue>{{ i18n.ts.continue }} <i class="ti ti-arrow-right"></i></MkButton>
+			<MkButton type="submit" :disabled="captchaFailed" large primary rounded style="margin: 0 auto;" data-cy-signin-page-password-continue>{{ i18n.ts.continue }} <i class="ti ti-arrow-right"></i></MkButton>
 		</form>
 	</div>
 </div>
@@ -44,7 +44,7 @@ export type PwResponse = {
 </script>
 
 <script setup lang="ts">
-import { ref, defineAsyncComponent } from 'vue';
+import { ref, computed, defineAsyncComponent } from 'vue';
 import * as Misskey from 'misskey-js';
 
 import { instance } from '@/instance.js';
@@ -70,6 +70,14 @@ const mCaptchaResponse = ref<string | null>(null);
 const reCaptchaResponse = ref<string | null>(null);
 const turnstileResponse = ref<string | null>(null);
 
+const captchaFailed = computed((): boolean => {
+	return (
+		instance.enableHcaptcha && !hCaptchaResponse.value ||
+		instance.enableMcaptcha && !mCaptchaResponse.value ||
+		instance.enableRecaptcha && !reCaptchaResponse.value ||
+		instance.enableTurnstile && !turnstileResponse.value);
+});
+
 function resetPassword(): void {
 	const { dispose } = os.popup(defineAsyncComponent(() => import('@/components/MkForgotPassword.vue')), {}, {
 		closed: () => dispose(),
diff --git a/packages/frontend/src/components/MkSignin.vue b/packages/frontend/src/components/MkSignin.vue
index 0115f8f494..39dc63d3d9 100644
--- a/packages/frontend/src/components/MkSignin.vue
+++ b/packages/frontend/src/components/MkSignin.vue
@@ -82,14 +82,6 @@ import XPasskey from '@/components/MkSignin.passkey.vue';
 import type { AuthenticationPublicKeyCredential } from '@github/webauthn-json/browser-ponyfill';
 import type { OpenOnRemoteOptions } from '@/scripts/please-login.js';
 
-const captchaFailed = computed((): boolean => {
-	return (
-		instance.enableHcaptcha && !hCaptchaResponse.value ||
-		instance.enableMcaptcha && !mCaptchaResponse.value ||
-		instance.enableRecaptcha && !reCaptchaResponse.value ||
-		instance.enableTurnstile && !turnstileResponse.value);
-});
-
 const emit = defineEmits<{
 	(ev: 'login', v: Misskey.entities.SigninResponse): void;
 }>();