diff --git a/trie/database.go b/trie/database.go
index f140a56642..58ca4e6f3c 100644
--- a/trie/database.go
+++ b/trie/database.go
@@ -794,8 +794,8 @@ type cleaner struct {
 // Put reacts to database writes and implements dirty data uncaching. This is the
 // post-processing step of a commit operation where the already persisted trie is
 // removed from the dirty cache and moved into the clean cache. The reason behind
-// the two-phase commit is to ensure ensure data availability while moving from
-// memory to disk.
+// the two-phase commit is to ensure data availability while moving from memory
+// to disk.
 func (c *cleaner) Put(key []byte, rlp []byte) error {
 	hash := common.BytesToHash(key)