diff --git a/src/parser.rs b/src/parser.rs
index 1167620..c1bb5d0 100644
--- a/src/parser.rs
+++ b/src/parser.rs
@@ -221,8 +221,10 @@ impl Parser {
     }
 
     fn paren_expr(&mut self) -> ParseResult<Expression> {
-
-        unimplemented!()
+        expect!(self, LParen, "Expected LParen");
+        let expr = try!(self.expression());
+        expect!(self, RParen, "Expected LParen");
+        Ok(expr)
     }
 }