diff --git a/crates/lang/src/parser/grammar/expression/collection/matrix.rs b/crates/lang/src/parser/grammar/expression/collection/matrix.rs
index 2c572f5..a8e21a1 100644
--- a/crates/lang/src/parser/grammar/expression/collection/matrix.rs
+++ b/crates/lang/src/parser/grammar/expression/collection/matrix.rs
@@ -52,8 +52,10 @@ fn matrix_body(p: &mut Parser) {
                 }
             };
         } else if p.at(R_BRACK) {
+            mat_item.abandon(p);
             going = false;
         } else {
+            mat_item.abandon(p);
             let err = p.start("err");
             p.do_bump();
             err.complete_err(p, SyntaxError::Expected(vec![EXPR, R_BRACK]));