diff --git a/src/cst/symbol_declaration.rs b/src/cst/symbol_declaration.rs
index e4bc924..b0e993d 100644
--- a/src/cst/symbol_declaration.rs
+++ b/src/cst/symbol_declaration.rs
@@ -286,7 +286,7 @@ impl<'a> SymbolDeclaration {
 
     fn gen_var_width(json: &JsonValue, dim_path: Vec<&str>) -> usize {
         let json_dims = Tools::match_tags(vec![json], dim_path);
-        //assert!(json_dims.len() == 0 || json_dims.len() == 2);
+        assert!(json_dims.len() == 0 || json_dims.len() == 1 ||json_dims.len() == 2);
 
         match json_dims.len() {
             2 => {