diff --git a/src/managesieve-login/managesieve-login-settings-plugin.c b/src/managesieve-login/managesieve-login-settings-plugin.c
index f4aa47766a80c5eedea46bca8c2698eff046b50e..4d957d5591bd1a0f9ac5b28dee17833424dfe696 100644
--- a/src/managesieve-login/managesieve-login-settings-plugin.c
+++ b/src/managesieve-login/managesieve-login-settings-plugin.c
@@ -215,7 +215,7 @@ static void managesieve_login_config_set
 (struct config_parser_context *ctx, const char *key, const char *value)
 {
 	config_parser_set_change_counter(ctx, CONFIG_PARSER_CHANGE_INTERNAL);
-	config_apply_line(ctx, key, t_strdup_printf("%s=%s", key, value), NULL);
+	config_apply_line(ctx, key, value, NULL);
 	config_parser_set_change_counter(ctx, CONFIG_PARSER_CHANGE_EXPLICIT);
 }