diff --git a/Parse/Internal/Object/Subclassing/PFObjectSubclassingController.m b/Parse/Internal/Object/Subclassing/PFObjectSubclassingController.m
index ec6fb137e..a507cbeb5 100644
--- a/Parse/Internal/Object/Subclassing/PFObjectSubclassingController.m
+++ b/Parse/Internal/Object/Subclassing/PFObjectSubclassingController.m
@@ -339,7 +339,7 @@ - (void)_rawRegisterSubclass:(Class)kls {
 }
 
 - (void)_registerSubclassesInBundle:(NSBundle *)bundle {
-    PFConsistencyAssert(bundle.loaded, @"Cannot register subclasses in a bundle that hasn't been loaded!");
+    PFConsistencyAssert(bundle.loaded, @"Cannot register subclasses in an unloaded bundle: %@", bundle);
 
     const char *executablePath = bundle.executablePath.UTF8String;
     if (executablePath == NULL) {