diff --git a/tests/ui/runtime/backtrace-debuginfo.rs b/tests/ui/runtime/backtrace-debuginfo.rs
index 9c4b15e64f51f..da747ded44ff2 100644
--- a/tests/ui/runtime/backtrace-debuginfo.rs
+++ b/tests/ui/runtime/backtrace-debuginfo.rs
@@ -13,6 +13,10 @@
 //@ ignore-sgx no processes
 //@ ignore-fuchsia Backtrace not symbolized, trace different line alignment
 
+// FIXME(#117097): backtrace (possibly unwinding mechanism) seems to be different on at least
+// `i686-mingw` (32-bit windows-gnu)? cc #128911.
+//@ ignore-windows-gnu
+
 use std::env;
 
 #[path = "backtrace-debuginfo-aux.rs"] mod aux;