diff --git a/library/coretests/tests/num/int_log.rs b/library/coretests/tests/num/int_log.rs
index 60902752dab64..9c630a61dd5b3 100644
--- a/library/coretests/tests/num/int_log.rs
+++ b/library/coretests/tests/num/int_log.rs
@@ -34,6 +34,7 @@ fn checked_ilog() {
 }
 
 #[test]
+#[cfg_attr(miri, ignore)] // FIXME test is broken on Miri: https://github.com/rust-lang/rust/issues/137591
 fn checked_ilog2() {
     assert_eq!(5u32.checked_ilog2(), Some(2));
     assert_eq!(0u64.checked_ilog2(), None);