diff --git a/qdl.h b/qdl.h
index 93203b9..4d35ef0 100644
--- a/qdl.h
+++ b/qdl.h
@@ -11,7 +11,7 @@
 
 #define container_of(ptr, typecast, member) ({                  \
 	void *_ptr = (void *)(ptr);		                \
-	((typecast *)(_ptr - offsetof(typecast, member))); })
+	((typeof(typecast) *)(_ptr - offsetof(typecast, member))); })
 
 #define MAPPING_SZ 64