diff --git a/src/libvirt.c b/src/libvirt.c
index 3e654f0eb7..a5e2cc71ad 100644
--- a/src/libvirt.c
+++ b/src/libvirt.c
@@ -3248,7 +3248,7 @@ virDomainShutdownFlags(virDomainPtr domain, unsigned int flags)
 {
     virConnectPtr conn;
 
-    VIR_DOMAIN_DEBUG(domain, "flags=%u", flags);
+    VIR_DOMAIN_DEBUG(domain, "flags=%x", flags);
 
     virResetLastError();