diff --git a/addons/res_config_mysql.c b/addons/res_config_mysql.c
index d952a45ab5..a626ffd3ee 100644
--- a/addons/res_config_mysql.c
+++ b/addons/res_config_mysql.c
@@ -1528,7 +1528,7 @@ static int load_mysql_config(struct ast_config *config, const char *category, st
 	} else
 		ast_copy_string(conn->sock, s, sizeof(conn->sock));
 
-	if (s = ast_variable_retrieve(config, category, "dbcharset")) {
+	if ((s = ast_variable_retrieve(config, category, "dbcharset"))) {
 		ast_copy_string(conn->charset, s, sizeof(conn->charset));
 	}