diff --git a/src/security/security_dac.c b/src/security/security_dac.c
index b8de2321e3..fba2d1ddbf 100644
--- a/src/security/security_dac.c
+++ b/src/security/security_dac.c
@@ -615,7 +615,8 @@ virSecurityDACSetProcessLabel(virSecurityManagerPtr mgr,
 {
     virSecurityDACDataPtr priv = virSecurityManagerGetPrivateData(mgr);
 
-    VIR_DEBUG("Dropping privileges of VM to %d:%d", priv->user, priv->group);
+    VIR_DEBUG("Dropping privileges of VM to %u:%u",
+              (unsigned int) priv->user, (unsigned int) priv->group);
 
     if (virSetUIDGID(priv->user, priv->group) < 0)
         return -1;