diff --git a/schala-lang/src/symbol_table.rs b/schala-lang/src/symbol_table.rs
index 0c3f7fc..e886fb3 100644
--- a/schala-lang/src/symbol_table.rs
+++ b/schala-lang/src/symbol_table.rs
@@ -50,7 +50,7 @@ impl fmt::Display for SymbolSpec {
     use self::SymbolSpec::*;
     match self {
       Func(type_names) => write!(f, "Func({:?})", type_names),
-      DataConstructor { index, type_name, type_args } => write!(f, "DataConstructor({})({:?} -> {})", index, type_args, type_name),
+      DataConstructor { index, type_name, type_args } => write!(f, "DataConstructor(idx: {})({:?} -> {})", index, type_args, type_name),
     }
   }
 }