diff --git a/Source/ObjectiveDropboxOfficial/Shared/Handwritten/OAuth/DBOAuthManager.m b/Source/ObjectiveDropboxOfficial/Shared/Handwritten/OAuth/DBOAuthManager.m
index d47e975e2..25ebcf406 100644
--- a/Source/ObjectiveDropboxOfficial/Shared/Handwritten/OAuth/DBOAuthManager.m
+++ b/Source/ObjectiveDropboxOfficial/Shared/Handwritten/OAuth/DBOAuthManager.m
@@ -60,7 +60,11 @@ - (instancetype)initWithAppKey:(NSString *)appKey host:(NSString *)host {
     _cancelURL = [NSURL URLWithString:[NSString stringWithFormat:@"db-%@://2/cancel", _appKey]];
     _host = host;
     _urls = [NSMutableArray arrayWithObjects:_redirectURL, nil];
+#ifdef TARGET_OS_MAC
+    _disableSignup = NO;
+#else
     _disableSignup = YES;
+#endif
   }
   return self;
 }