diff --git a/lib/impure/db_mysql.nim b/lib/impure/db_mysql.nim
index 82f27537c28f5..f0d9d8540ccc3 100644
--- a/lib/impure/db_mysql.nim
+++ b/lib/impure/db_mysql.nim
@@ -130,7 +130,6 @@ proc dbQuote*(s: string): string =
     of '\r': result.add "\\r"
     of '\x1a': result.add "\\Z"
     of '"': result.add "\\\""
-    of '%': result.add "\\%"
     of '\'': result.add "\\'"
     of '\\': result.add "\\\\"
     of '_': result.add "\\_"