diff --git a/schala-lang/language/src/parsing.rs b/schala-lang/language/src/parsing.rs
index e7d1630..79ba2e4 100644
--- a/schala-lang/language/src/parsing.rs
+++ b/schala-lang/language/src/parsing.rs
@@ -162,6 +162,7 @@ mod test;
 
 use std::rc::Rc;
 use std::str::FromStr;
+use std::collections::HashMap;
 
 use crate::tokenizing::*;
 use crate::tokenizing::Kw::*;
@@ -200,6 +201,11 @@ pub struct Parser {
   parse_level: u32,
   restrictions: ParserRestrictions,
   id_store: ItemIdStore,
+  source_map: SourceMap,
+}
+
+struct SourceMap {
+  map: HashMap<ItemId, 
 }
 
 struct ParserRestrictions {
@@ -250,6 +256,7 @@ impl Parser {
       parse_level: 0,
       restrictions: ParserRestrictions { no_struct_literal: false },
       id_store: ItemIdStore::new(),
+      source_map: SourceMap::new(),
     }
   }
 
diff --git a/schala-lang/language/src/symbol_table/test.rs b/schala-lang/language/src/symbol_table/test.rs
index f506702..2dfdca4 100644
--- a/schala-lang/language/src/symbol_table/test.rs
+++ b/schala-lang/language/src/symbol_table/test.rs
@@ -41,7 +41,8 @@ fn no_duplicates() {
   let mut symbol_table = SymbolTable::new();
   let ast = quick_ast(source);
   let output = symbol_table.add_top_level_symbols(&ast).unwrap_err();
-  assert!(output.contains("Duplicate"))
+  println!("OUTPUT: {}", output);
+  assert!(output.contains("Duplicateq"))
 }
 
 #[test]