diff --git a/compiler/test_gen/src/gen_tags.rs b/compiler/test_gen/src/gen_tags.rs
index ba77d1268a..4e8bfe68dc 100644
--- a/compiler/test_gen/src/gen_tags.rs
+++ b/compiler/test_gen/src/gen_tags.rs
@@ -1676,6 +1676,8 @@ fn issue_2900_unreachable_pattern() {
             "#
         ),
         RocStr::from("foo"),
-        RocStr
+        RocStr,
+        |x| x,
+        true // ignore type errors
     )
 }