diff --git a/devices/src/pvpanic.rs b/devices/src/pvpanic.rs
index 57a26310e..a3e82f8fb 100644
--- a/devices/src/pvpanic.rs
+++ b/devices/src/pvpanic.rs
@@ -210,7 +210,7 @@ impl PciDevice for PvPanicDevice {
         }
 
         bars.push(bar);
-        self.bar_regions = bars.clone();
+        self.bar_regions.clone_from(&bars);
 
         Ok(bars)
     }