diff --git a/pgxn/neon/file_cache.c b/pgxn/neon/file_cache.c
index f49415be68..ad5667cbab 100644
--- a/pgxn/neon/file_cache.c
+++ b/pgxn/neon/file_cache.c
@@ -541,6 +541,7 @@ lfc_cache_containsv(NRelFileInfo rinfo, ForkNumber forkNum, BlockNumber blkno,
 		}
 		else
 		{
+			LWLockRelease(lfc_lock);
 			return found;
 		}