diff --git a/ethdb/memorydb/memorydb.go b/ethdb/memorydb/memorydb.go
index 07433e7a39..346edc4381 100644
--- a/ethdb/memorydb/memorydb.go
+++ b/ethdb/memorydb/memorydb.go
@@ -198,7 +198,7 @@ func (db *Database) Stat(property string) (string, error) {
 }
 
 // Compact is not supported on a memory database, but there's no need either as
-// a memory database doens't waste space anyway.
+// a memory database doesn't waste space anyway.
 func (db *Database) Compact(start []byte, limit []byte) error {
 	return nil
 }