diff --git a/src/spiffs_hydrogen.c b/src/spiffs_hydrogen.c
index 235aaaa..5719a4d 100644
--- a/src/spiffs_hydrogen.c
+++ b/src/spiffs_hydrogen.c
@@ -1443,7 +1443,7 @@ s32_t SPIFFS_vis(spiffs *fs) {
   spiffs_printf("page_alloc:  "_SPIPRIi"\n", fs->stats_p_allocated);
   spiffs_printf("page_delet:  "_SPIPRIi"\n", fs->stats_p_deleted);
   SPIFFS_UNLOCK(fs);
-  u32_t total, used;
+  u32_t total = 0u, used = 0u;
   SPIFFS_info(fs, &total, &used);
   spiffs_printf("used:        "_SPIPRIi" of "_SPIPRIi"\n", used, total);
   return res;