diff --git a/compiler/rustc_mir_transform/src/unreachable_prop.rs b/compiler/rustc_mir_transform/src/unreachable_prop.rs
index bd1724bf84241..8227cc4b3bf6e 100644
--- a/compiler/rustc_mir_transform/src/unreachable_prop.rs
+++ b/compiler/rustc_mir_transform/src/unreachable_prop.rs
@@ -13,7 +13,9 @@ pub struct UnreachablePropagation;
 impl MirPass<'_> for UnreachablePropagation {
     fn is_enabled(&self, sess: &rustc_session::Session) -> bool {
         // Enable only under -Zmir-opt-level=2 as this can make programs less debuggable.
-        sess.mir_opt_level() >= 2
+        // Coverage gets confused by MIR passes that can remove all coverage statements
+        // from an instrumented function.
+        sess.mir_opt_level() >= 2 && !sess.instrument_coverage()
     }
 
     fn run_pass<'tcx>(&self, tcx: TyCtxt<'tcx>, body: &mut Body<'tcx>) {