diff --git a/tools/libxl/libxl_internal.c b/tools/libxl/libxl_internal.c
index fbff7d06d9..24099f59f6 100644
--- a/tools/libxl/libxl_internal.c
+++ b/tools/libxl/libxl_internal.c
@@ -330,8 +330,7 @@ out:
     return rc;
 }
 
-libxl_device_model_version libxl__device_model_version_running(libxl__gc *gc,
-                                                               uint32_t domid)
+int libxl__device_model_version_running(libxl__gc *gc, uint32_t domid)
 {
     char *path = NULL;
     char *dm_version = NULL;
diff --git a/tools/libxl/libxl_internal.h b/tools/libxl/libxl_internal.h
index 9ffb9d4dbf..1b9b417664 100644
--- a/tools/libxl/libxl_internal.h
+++ b/tools/libxl/libxl_internal.h
@@ -1515,8 +1515,7 @@ _hidden libxl__json_object *libxl__json_parse(libxl__gc *gc, const char *s);
 
   /* Based on /local/domain/$domid/dm-version xenstore key
    * default is qemu xen traditional */
-_hidden libxl_device_model_version
-libxl__device_model_version_running(libxl__gc *gc, uint32_t domid);
+_hidden int libxl__device_model_version_running(libxl__gc *gc, uint32_t domid);
 
 
 /*