diff --git a/src/qemu/qemu_monitor.h b/src/qemu/qemu_monitor.h
index 43843721bfd69d25b95d21da69d3777d50e4a110..d01266ff869b188852f2e0d0d47a40e820d56d2b 100644
--- a/src/qemu/qemu_monitor.h
+++ b/src/qemu/qemu_monitor.h
@@ -317,7 +317,7 @@ qemuMonitorPtr qemuMonitorOpen(virDomainObjPtr vm,
                                unsigned long long timeout,
                                qemuMonitorCallbacksPtr cb,
                                void *opaque)
-    ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(5);
+    ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(6);
 qemuMonitorPtr qemuMonitorOpenFD(virDomainObjPtr vm,
                                  int sockfd,
                                  bool json,