diff --git a/src/qemu/qemu_hotplug.c b/src/qemu/qemu_hotplug.c
index 5247c065711d85084aa44e89eafe1480b8b1e607..a486fb4fe334613fe0eb1b05c27adde067d72f27 100644
--- a/src/qemu/qemu_hotplug.c
+++ b/src/qemu/qemu_hotplug.c
@@ -3283,8 +3283,8 @@ qemuDomainChangeNet(virQEMUDriverPtr driver,
 
     if (!!olddev->coalesce != !!newdev->coalesce ||
         (olddev->coalesce && newdev->coalesce &&
-         !memcmp(olddev->coalesce, newdev->coalesce,
-                 sizeof(*olddev->coalesce))))
+         memcmp(olddev->coalesce, newdev->coalesce,
+                sizeof(*olddev->coalesce))))
         needCoalesceChange = true;
 
     /* FINALLY - actually perform the required actions */