diff --git a/source/ftl/map.c b/source/ftl/map.c
index ba79d63..365ec87 100644
--- a/source/ftl/map.c
+++ b/source/ftl/map.c
@@ -270,10 +270,10 @@ int find_block(struct ftl_map *map, struct ftl_page_group *group,
 #ifdef find_block
 #undef find_block
 #define find_block __wrap_find_block
-#endif
 
 int find_block(struct ftl_map *map, struct ftl_page_group *group,
 	uint32_t *where, uint32_t block);
+#endif
 
 /* Given the block number of the first block, attempts to use binary search to
  * find the last block that is in use.