diff --git a/src/client/app/common/views/components/signup.vue b/src/client/app/common/views/components/signup.vue
index d743202c2..42d6d23fb 100644
--- a/src/client/app/common/views/components/signup.vue
+++ b/src/client/app/common/views/components/signup.vue
@@ -35,7 +35,7 @@
 				<p v-if="passwordRetypeState == 'not-match'" style="color:#FF1161"><fa icon="exclamation-triangle" fixed-width/> %i18n:@password-not-matched%</p>
 			</div>
 		</ui-input>
-		<div v-if="meta.recaptchaSiteKey != null" class="g-recaptcha" :data-sitekey="meta.recaptchaSiteKey" style="margin: 16px 0;"></div>
+		<div v-if="meta.enableRecaptcha" class="g-recaptcha" :data-sitekey="meta.recaptchaSiteKey" style="margin: 16px 0;"></div>
 		<ui-button type="submit">%i18n:@create%</ui-button>
 	</template>
 </form>
@@ -130,7 +130,7 @@ export default Vue.extend({
 				username: this.username,
 				password: this.password,
 				invitationCode: this.invitationCode,
-				'g-recaptcha-response': this.meta.recaptchaSiteKey != null ? (window as any).grecaptcha.getResponse() : null
+				'g-recaptcha-response': this.meta.enableRecaptcha ? (window as any).grecaptcha.getResponse() : null
 			}, true).then(() => {
 				(this as any).api('signin', {
 					username: this.username,
@@ -141,7 +141,7 @@ export default Vue.extend({
 			}).catch(() => {
 				alert('%i18n:@some-error%');
 
-				if (this.meta.recaptchaSiteKey != null) {
+				if (this.meta.enableRecaptcha) {
 					(window as any).grecaptcha.reset();
 				}
 			});
diff --git a/src/server/api/endpoints/meta.ts b/src/server/api/endpoints/meta.ts
index ae07b944c..311e3d669 100644
--- a/src/server/api/endpoints/meta.ts
+++ b/src/server/api/endpoints/meta.ts
@@ -60,7 +60,8 @@ export default define(meta, (ps, me) => new Promise(async (res, rej) => {
 		driveCapacityPerLocalUserMb: instance.localDriveCapacityMb,
 		driveCapacityPerRemoteUserMb: instance.remoteDriveCapacityMb,
 		cacheRemoteFiles: instance.cacheRemoteFiles,
-		recaptchaSiteKey: instance.enableRecaptcha ? instance.recaptchaSiteKey : null,
+		enableRecaptcha: instance.enableRecaptcha,
+		recaptchaSiteKey: instance.recaptchaSiteKey,
 		swPublickey: config.sw ? config.sw.public_key : null,
 		bannerUrl: instance.bannerUrl,
 		maxNoteTextLength: instance.maxNoteTextLength,