diff --git a/src/unix/bsd/freebsdlike/dragonfly/mod.rs b/src/unix/bsd/freebsdlike/dragonfly/mod.rs
index a97ead4757b1..db83835f12c9 100644
--- a/src/unix/bsd/freebsdlike/dragonfly/mod.rs
+++ b/src/unix/bsd/freebsdlike/dragonfly/mod.rs
@@ -865,6 +865,8 @@ cfg_if! {
                 self.mc_fpregs.hash(state);
             }
         }
+        // FIXME(msrv): suggested method was added in 1.85
+        #[allow(unpredictable_function_pointer_comparisons)]
         impl PartialEq for ucontext_t {
             fn eq(&self, other: &ucontext_t) -> bool {
                 self.uc_sigmask == other.uc_sigmask