diff --git a/apps/explorer/lib/explorer/chain/blocks_cache.ex b/apps/explorer/lib/explorer/chain/blocks_cache.ex
index 24fab7f8b7..1df3fc8e31 100644
--- a/apps/explorer/lib/explorer/chain/blocks_cache.ex
+++ b/apps/explorer/lib/explorer/chain/blocks_cache.ex
@@ -46,7 +46,7 @@ defmodule Explorer.Chain.BlocksCache do
   end
 
   def enough_elements?(number) do
-    ConCache.size(@cache_name) > number + 1
+    ConCache.size(@cache_name) > number
   end
 
   def update_blocks(blocks) do