diff --git a/database/pkg.go b/database/pkg.go
index 63598ec..2f149d9 100644
--- a/database/pkg.go
+++ b/database/pkg.go
@@ -164,7 +164,7 @@ func (db *T) Authenticate(username, password string) (authenticated bool, userID
 		SELECT id
 		FROM _webservice.user
 		WHERE
-			username = $1 AND
+			LOWER(username) = LOWER($1) AND
 			password = _webservice.password_hash(SUBSTRING(password FROM 1 FOR 32), $2::bytea)
 		`,
 		username,