diff --git a/src/conf/cpu_conf.h b/src/conf/cpu_conf.h
index a9f8abeef1b3f0f0abb51316aa3f8882c25c4e9e..e41d47d1aeaeb53888e88f6778569ed0487252b9 100644
--- a/src/conf/cpu_conf.h
+++ b/src/conf/cpu_conf.h
@@ -151,6 +151,7 @@ virCPUDefFreeModel(virCPUDefPtr def);
 
 void
 virCPUDefFree(virCPUDefPtr def);
+G_DEFINE_AUTOPTR_CLEANUP_FUNC(virCPUDef, virCPUDefFree);
 
 int ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2)
 virCPUDefCopyModel(virCPUDefPtr dst,