diff --git a/res/res_config_odbc.c b/res/res_config_odbc.c
index 96d5aacd3ad5647404544fec577aa7cfde86f9c9..144ca550b5111e8fe926fce6e9cf57ce5a2ee0c4 100755
--- a/res/res_config_odbc.c
+++ b/res/res_config_odbc.c
@@ -416,7 +416,7 @@ static struct ast_config *config_odbc (const char *database, const char *table,
 	odbc_obj *obj;
 	SQLINTEGER err=0, commented=0, cat_metric=0, var_metric=0, last_cat_metric=0;
 	SQLBIGINT id;
-	char sql[255] = "", filename[128], category[128], var_name[128], var_val[128];
+	char sql[255] = "", filename[128], category[128], var_name[128], var_val[512];
 	SQLSMALLINT rowcount=0;
 	SQLHSTMT stmt;
 	char last[80] = "";