diff --git a/src/qemu/qemu_monitor.h b/src/qemu/qemu_monitor.h
index e8ed2d044c..81474a04f6 100644
--- a/src/qemu/qemu_monitor.h
+++ b/src/qemu/qemu_monitor.h
@@ -824,7 +824,7 @@ int qemuMonitorCreateObjectProps(virJSONValuePtr *propsret,
 int qemuMonitorAddObject(qemuMonitorPtr mon,
                          virJSONValuePtr *props,
                          char **alias)
-    ATTRIBUTE_NONNULL(1);
+    ATTRIBUTE_NONNULL(2);
 
 int qemuMonitorDelObject(qemuMonitorPtr mon,
                          const char *objalias);