diff --git a/Source/MagicalRecordHelpers.h b/Source/MagicalRecordHelpers.h
index 8e41d0efc..94f8326d3 100644
--- a/Source/MagicalRecordHelpers.h
+++ b/Source/MagicalRecordHelpers.h
@@ -29,7 +29,7 @@ typedef void (^CoreDataBlock)(NSManagedObjectContext *context);
 + (SEL) errorHandlerAction;
 + (id) errorHandlerTarget;
 
-+ (void) setDefaultModelForTestCase:(Class)class;
++ (void) setDefaultModelForTestCase:(Class)aClass;
 + (void) setDefaultModelNamed:(NSString *)modelName;
 + (NSString *) defaultStoreName;
 
diff --git a/Source/MagicalRecordHelpers.m b/Source/MagicalRecordHelpers.m
index a286ae04f..12cb3b428 100644
--- a/Source/MagicalRecordHelpers.m
+++ b/Source/MagicalRecordHelpers.m
@@ -127,9 +127,9 @@ + (void) setDefaultModelNamed:(NSString *)modelName;
     [NSManagedObjectModel MR_setDefaultManagedObjectModel:model];
 }
 
-+ (void) setDefaultModelForTestCase:(Class)class;
++ (void) setDefaultModelForTestCase:(Class)aClass;
 {
-    NSBundle *bundle = [NSBundle bundleForClass:class];
+    NSBundle *bundle = [NSBundle bundleForClass:aClass];
     NSManagedObjectModel *model = [NSManagedObjectModel mergedModelFromBundles:[NSArray arrayWithObject:bundle]];
     [NSManagedObjectModel MR_setDefaultManagedObjectModel:model];
 }