diff --git a/JFRWebSocket.m b/JFRWebSocket.m
index 22d7d0a..436d24d 100644
--- a/JFRWebSocket.m
+++ b/JFRWebSocket.m
@@ -776,7 +776,7 @@ - (NSError*)errorWithDetail:(NSString*)detail code:(NSInteger)code
 - (NSError*)errorWithDetail:(NSString*)detail code:(NSInteger)code userInfo:(NSDictionary *)userInfo
 {
     NSMutableDictionary* details = [NSMutableDictionary dictionary];
-    details[detail] = NSLocalizedDescriptionKey;
+    details[NSLocalizedDescriptionKey] = detail;
     if (userInfo) {
         [details addEntriesFromDictionary:userInfo];
     }