diff --git a/CHANGELOG.md b/CHANGELOG.md
index 28f1230..10be6e6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,8 @@
 ## Changelogs
 
+- **[3.0.6]**
+  - `isKakaoTalkLoginUrl` 에서 SDK가 준비가 되지 않았으면 `false` return 하도록 수정.
+
 - **[3.0.5]**
   - `3.0.4`에서 잘못 수정된 부분 수정 (regression).
 
diff --git a/ios/RNKakaoLogins/RNKakaoLogins.swift b/ios/RNKakaoLogins/RNKakaoLogins.swift
index 3929807..12d54f5 100644
--- a/ios/RNKakaoLogins/RNKakaoLogins.swift
+++ b/ios/RNKakaoLogins/RNKakaoLogins.swift
@@ -27,7 +27,13 @@ class RNKakaoLogins: NSObject {
     
     @objc(isKakaoTalkLoginUrl:)
     public static func isKakaoTalkLoginUrl(url:URL) -> Bool {
-        return AuthApi.isKakaoTalkLoginUrl(url)
+        
+        let appKey = try? KakaoSDKCommon.shared.appKey();
+
+        if (appKey != nil) {
+            return AuthApi.isKakaoTalkLoginUrl(url)
+        }
+        return false
     }
 
     @objc(handleOpenUrl:)
diff --git a/package.json b/package.json
index 6aafb3a..e6a9b1a 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@react-native-seoul/kakao-login",
-  "version": "3.0.5",
+  "version": "3.0.6",
   "description": "React Native Module for Kakao Login",
   "main": "index.js",
   "types": "index.d.ts",