diff --git a/src/parser.rs b/src/parser.rs
index 443ee52..5264cdf 100644
--- a/src/parser.rs
+++ b/src/parser.rs
@@ -569,16 +569,16 @@ mod tests {
     fn expression_parse_test() {
         parsetest!("a", &[ExprNode(Variable(ref s))], **s == "a");
         parsetest!("a + b",
-            &[ExprNode(BinExp(Op::Plus, box Variable(ref a), box Variable(ref b)))],
+            &[ExprNode(BinExp(BinOp::Add, box Variable(ref a), box Variable(ref b)))],
             **a == "a" && **b == "b");
         parsetest!("a + b * c",
-            &[ExprNode(BinExp(Op::Plus, box Variable(ref a), box BinExp(Op::Mul, box Variable(ref b), box Variable(ref c))))],
+            &[ExprNode(BinExp(BinOp::Add, box Variable(ref a), box BinExp(BinOp::Mul, box Variable(ref b), box Variable(ref c))))],
             **a == "a" && **b == "b" && **c == "c");
         parsetest!("a * b + c",
-            &[ExprNode(BinExp(Op::Plus, box BinExp(Op::Mul, box Variable(ref a), box Variable(ref b)), box Variable(ref c)))],
+            &[ExprNode(BinExp(BinOp::Add, box BinExp(BinOp::Mul, box Variable(ref a), box Variable(ref b)), box Variable(ref c)))],
             **a == "a" && **b == "b" && **c == "c");
         parsetest!("(a + b) * c",
-            &[ExprNode(BinExp(Op::Mul, box BinExp(Op::Plus, box Variable(ref a), box Variable(ref b)), box Variable(ref c)))],
+            &[ExprNode(BinExp(BinOp::Mul, box BinExp(BinOp::Add, box Variable(ref a), box Variable(ref b)), box Variable(ref c)))],
             **a == "a" && **b == "b" && **c == "c");
     }
 
diff --git a/src/tokenizer.rs b/src/tokenizer.rs
index 82e3d8e..e708959 100644
--- a/src/tokenizer.rs
+++ b/src/tokenizer.rs
@@ -180,6 +180,10 @@ mod tests {
                    [NumLiteral(2.3), Operator(OpTok(ref a)), NumLiteral(49.2)],
                    **a == "*");
 
+        token_test!("a+3",
+                    [Identifier(ref a), NumLiteral(3.0)],
+                    **a == "a+");
+
         assert!(tokenize("2.4.5").is_err());
 
         token_test!("fn my_func(a) { a ? 3[1] }",