Index: src/OFMapTable.m
==================================================================
--- src/OFMapTable.m
+++ src/OFMapTable.m
@@ -66,14 +66,14 @@
 	     forKey: (void*)key
 	       hash: (uint32_t)hash;
 @end
 
 @interface OFMapTableEnumerator (OF_PRIVATE_CATEGORY)
-- OF_initWithMapTable: (OFMapTable*)mapTable
-	      buckets: (struct of_map_table_bucket**)buckets
-	     capacity: (uint32_t)capacity
-     mutationsPointer: (unsigned long*)mutationsPtr;
+- (instancetype)OF_initWithMapTable: (OFMapTable*)mapTable
+			    buckets: (struct of_map_table_bucket**)buckets
+			   capacity: (uint32_t)capacity
+		   mutationsPointer: (unsigned long*)mutationsPtr;
 @end
 
 @interface OFMapTableKeyEnumerator: OFMapTableEnumerator
 @end