diff --git a/assets/parser.rs.erb b/assets/parser.rs.erb
index 3dc2ba7..c9f46e6 100644
--- a/assets/parser.rs.erb
+++ b/assets/parser.rs.erb
@@ -46,7 +46,7 @@ pub type <%= @grammar.prefix %>code_point_t = u32;
  *
  * This is useful for reporting errors, etc...
  */
-#[derive(Clone, Copy, Default, PartialEq)]
+#[derive(Clone, Copy, Debug, Default, PartialEq)]
 pub struct <%= @grammar.prefix %>position_t {
     /** Input text row (1-based). */
     pub row: u32,
diff --git a/spec/test_set_position.rs b/spec/test_set_position.rs
index 6696e15..95c4974 100644
--- a/spec/test_set_position.rs
+++ b/spec/test_set_position.rs
@@ -17,9 +17,7 @@ fn main() {
     /* p_set_position overrides the initial position. */
     let mut c = p_context_new(b"ab");
     p_set_position(&mut c, p_position_t { row: 5, col: 20 });
-    let pos = p_position(&c);
-    assert_eq!(5, pos.row);
-    assert_eq!(20, pos.col);
+    assert_eq!(p_position_t { row: 5, col: 20 }, p_position(&c));
     assert_eq!(P_SUCCESS, p_lex(&mut c, &mut ti));
     assert_eq!(TOKEN_a, ti.token);
     assert_eq!(5, ti.position.row);