diff --git a/source/ftl/ftl.c b/source/ftl/ftl.c
index 6f08e40..91a1dfb 100644
--- a/source/ftl/ftl.c
+++ b/source/ftl/ftl.c
@@ -28,6 +28,9 @@ size_t ftl_read(struct ftl_map *map, void *data, size_t len, uint32_t va)
 	if (!data)
 		return 0;
 
+	if (ftl_sync(map) < 0)
+		return 0;
+
 	offset = va & ((1 << map->log2_page_size) - 1);
 	va >>= map->log2_page_size;
 	len = min(len, (1 << map->log2_page_size) - offset);
@@ -150,6 +153,9 @@ int ftl_trim(struct ftl_map *map, uint32_t va)
 	uint32_t alt_page, page;
 	int ret;
 
+	if (ftl_sync(map) < 0)
+		return -1;
+
 	if ((ret = trace_path(map, &page_desc, &page, va)) < 0) {
 		if (ret == -ERR_NOT_FOUND)
 			return 0;