diff --git a/app/src/main/java/com/huanchengfly/tieba/post/api/retrofit/exception/TiebaLocalException.kt b/app/src/main/java/com/huanchengfly/tieba/post/api/retrofit/exception/TiebaLocalException.kt
index d9553323..f6400ffd 100644
--- a/app/src/main/java/com/huanchengfly/tieba/post/api/retrofit/exception/TiebaLocalException.kt
+++ b/app/src/main/java/com/huanchengfly/tieba/post/api/retrofit/exception/TiebaLocalException.kt
@@ -1,6 +1,6 @@
 package com.huanchengfly.tieba.post.api.retrofit.exception
 
-class TiebaLocalException(
+open class TiebaLocalException(
     override val code: Int,
     msg: String
 ) : TiebaException(msg)
\ No newline at end of file
diff --git a/app/src/main/java/com/huanchengfly/tieba/post/api/retrofit/exception/TiebaNotLoggedInException.kt b/app/src/main/java/com/huanchengfly/tieba/post/api/retrofit/exception/TiebaNotLoggedInException.kt
new file mode 100644
index 00000000..5bad528c
--- /dev/null
+++ b/app/src/main/java/com/huanchengfly/tieba/post/api/retrofit/exception/TiebaNotLoggedInException.kt
@@ -0,0 +1,7 @@
+package com.huanchengfly.tieba.post.api.retrofit.exception
+
+import com.huanchengfly.tieba.post.api.Error.ERROR_NOT_LOGGED_IN
+
+class TiebaNotLoggedInException(
+    msg: String = "Not logged in!"
+) : TiebaLocalException(ERROR_NOT_LOGGED_IN, msg)
\ No newline at end of file
diff --git a/app/src/main/java/com/huanchengfly/tieba/post/api/retrofit/interceptors/ForceLoginInterceptor.kt b/app/src/main/java/com/huanchengfly/tieba/post/api/retrofit/interceptors/ForceLoginInterceptor.kt
index 7d763ec0..ad9a2308 100644
--- a/app/src/main/java/com/huanchengfly/tieba/post/api/retrofit/interceptors/ForceLoginInterceptor.kt
+++ b/app/src/main/java/com/huanchengfly/tieba/post/api/retrofit/interceptors/ForceLoginInterceptor.kt
@@ -1,8 +1,7 @@
 package com.huanchengfly.tieba.post.api.retrofit.interceptors
 
-import com.huanchengfly.tieba.post.api.Error.ERROR_NOT_LOGGED_IN
 import com.huanchengfly.tieba.post.api.Header
-import com.huanchengfly.tieba.post.api.retrofit.exception.TiebaLocalException
+import com.huanchengfly.tieba.post.api.retrofit.exception.TiebaNotLoggedInException
 import com.huanchengfly.tieba.post.utils.AccountUtil
 import okhttp3.Interceptor
 import okhttp3.Response
@@ -23,7 +22,7 @@ object ForceLoginInterceptor : Interceptor {
         }
 
         if (forceLogin && !AccountUtil.isLoggedIn()) {
-            throw TiebaLocalException(ERROR_NOT_LOGGED_IN, "Not logged in.")
+            throw TiebaNotLoggedInException()
         }
 
         return chain.proceed(