diff --git a/schala-lang/src/ast.rs b/schala-lang/src/ast.rs
index b1e728a..e04d7fb 100644
--- a/schala-lang/src/ast.rs
+++ b/schala-lang/src/ast.rs
@@ -132,7 +132,8 @@ pub struct Guard {
 
 #[derive(Debug, PartialEq, Clone)]
 pub struct Pattern {
-
+  pub free_vars: Vec<Rc<String>>,
+  pub var: Variant,
 }
 
 #[derive(Debug, PartialEq, Clone)]
diff --git a/schala-lang/src/parsing.rs b/schala-lang/src/parsing.rs
index 429cc42..4972016 100644
--- a/schala-lang/src/parsing.rs
+++ b/schala-lang/src/parsing.rs
@@ -678,7 +678,10 @@ impl Parser {
 
   parse_method!(pattern(&mut self) -> ParseResult<Pattern> {
     let identifier = self.identifier()?;
-    Ok(Pattern {  })
+    Ok(Pattern {
+      free_vars: vec![],
+      var: Variant::UnitStruct(identifier)
+    })
   });
 
   parse_method!(block(&mut self) -> ParseResult<Block> {