diff --git a/schala-lang/language/src/schala.rs b/schala-lang/language/src/schala.rs
index 769925b..fd210a3 100644
--- a/schala-lang/language/src/schala.rs
+++ b/schala-lang/language/src/schala.rs
@@ -90,7 +90,7 @@ impl Schala {
     // Typechecking
     // TODO typechecking not working
     let _overall_type = self.type_context.typecheck(&ast)
-      .map_err(|err| SchalaError::from_type_error(err));
+      .map_err(SchalaError::from_type_error);
 
     // Reduce AST - TODO this doesn't produce an error yet, but probably should
     let symbol_table = self.symbol_table.borrow();
diff --git a/schala-lang/language/src/symbol_table/mod.rs b/schala-lang/language/src/symbol_table/mod.rs
index d1fc056..09a20d9 100644
--- a/schala-lang/language/src/symbol_table/mod.rs
+++ b/schala-lang/language/src/symbol_table/mod.rs
@@ -23,8 +23,8 @@ macro_rules! fqsn {
   };
 }
 
-mod source_map;
-use source_map::SourceMap;
+mod tables;
+use tables::SourceMap;
 mod symbol_trie;
 use symbol_trie::SymbolTrie;
 mod test;
@@ -139,7 +139,7 @@ impl SymbolTable {
 #[allow(dead_code)]
 #[derive(Debug)]
 pub struct Symbol {
-  pub local_name: Rc<String>, //TODO does this need to be pub?
+  pub local_name: Rc<String>,
   fully_qualified_name: FullyQualifiedSymbolName,
   pub spec: SymbolSpec,
 }
@@ -204,12 +204,12 @@ impl SymbolTable {
 
           match decl {
             FuncSig(ref signature) => {
-              seen_identifiers.try_register(&signature.name, &id, &self.source_map)
+              seen_identifiers.try_register(&signature.name, id, &self.source_map)
                 .map_err(|line| format!("Duplicate function definition: {}. It's already defined at {}", signature.name, line))?;
               self.add_function_signature(signature, scope_name_stack)?
             }
             FuncDecl(ref signature, ref body) => {
-              seen_identifiers.try_register(&signature.name, &id, &self.source_map)
+              seen_identifiers.try_register(&signature.name, id, &self.source_map)
                 .map_err(|line| format!("Duplicate function definition: {}. It's already defined at {}", signature.name, line))?;
               self.add_function_signature(signature, scope_name_stack)?;
               scope_name_stack.push(ScopeSegment{
@@ -234,7 +234,7 @@ impl SymbolTable {
         },
         Statement { kind: StatementKind::Module(ModuleSpecifier { name, contents}), id, location } => {
           self.source_map.add_location(id, *location);
-          seen_modules.try_register(&name, &id, &self.source_map)
+          seen_modules.try_register(name, id, &self.source_map)
             .map_err(|line| format!("Duplicate module definition: {}. It's already defined at {}", name, line))?;
           scope_name_stack.push(ScopeSegment { name: name.clone() });
           let output = self.add_symbols_from_scope(contents, scope_name_stack);
@@ -248,7 +248,7 @@ impl SymbolTable {
   }
   #[allow(dead_code)]
   pub fn debug_symbol_table(&self) -> String {
-    let mut output = format!("Symbol table\n");
+    let mut output = "Symbol table\n".to_string();
     let mut sorted_symbols: Vec<(&FullyQualifiedSymbolName, &Symbol)> = self.symbol_path_to_symbol.iter().collect();
     sorted_symbols.sort_by(|(fqsn, _), (other_fqsn, _)| fqsn.cmp(other_fqsn));
     for (name, sym) in sorted_symbols.iter() {
diff --git a/schala-lang/language/src/symbol_table/source_map.rs b/schala-lang/language/src/symbol_table/tables.rs
similarity index 100%
rename from schala-lang/language/src/symbol_table/source_map.rs
rename to schala-lang/language/src/symbol_table/tables.rs