diff --git a/neps/nep-0508.md b/neps/nep-0508.md
index c690f9b31..b1c07b14e 100644
--- a/neps/nep-0508.md
+++ b/neps/nep-0508.md
@@ -12,7 +12,7 @@ LastUpdated: 2023-09-19
 
 ## Summary
 
-In essence, this NEP is extension of [NEP-40](https://github.com/near/NEPs/blob/master/specs/Proposals/0040-split-states.md), which focused splitting one shard into multiple shards. 
+In essence, this NEP is an extension of [NEP-40](https://github.com/near/NEPs/blob/master/specs/Proposals/0040-split-states.md), which focused splitting one shard into multiple shards. 
 
 We are introducing resharding v2, which supports one shard splitting into two within one epoch at pre-determined split boundary. The NEP includes performance improvement to make resharding feasible under the current state as well as actual resharding in mainnet and testnet (To be specific, spliting shard 3 into two).