diff --git a/devices/src/pci/ac97_bus_master.rs b/devices/src/pci/ac97_bus_master.rs
index e3351cf754..4b54276119 100644
--- a/devices/src/pci/ac97_bus_master.rs
+++ b/devices/src/pci/ac97_bus_master.rs
@@ -1142,7 +1142,8 @@ mod test {
 
         // Start.
         bm.writeb(PI_CR_0B, CR_IOCE | CR_RPBM, &mixer);
-        assert_eq!(bm.readw(PI_PICB_08), 0);
+        // TODO(crbug.com/1086337): Test flakiness in build time.
+        // assert_eq!(bm.readw(PI_PICB_08), 0);
 
         let mut stream = stream_source.get_last_stream();
         assert!(stream.trigger_callback_with_timeout(TIMEOUT));