diff --git a/tests/test.rs b/tests/test.rs
index 80ada11..97c7de0 100644
--- a/tests/test.rs
+++ b/tests/test.rs
@@ -2154,6 +2154,12 @@ fn test_high_byte_strings_and_unicode_strings_without_reserved_tags() {
             }
         }
     }
+    // FIXME: Libreoffice recognizes a REPT("O", I44) formula
+    let formulas = xls.worksheet_formula("Sheet1").unwrap();
+    assert_eq!(
+        "Unrecognised formula for cell (43, 9): Unrecognized { typ: \"ptg\", val: 192 }",
+        formulas.get_value((43, 9)).unwrap()
+    );
 }
 
 #[test]