diff --git a/gdk/gdkvulkancontext.c b/gdk/gdkvulkancontext.c
index 8c72862338..cfb5f016af 100644
--- a/gdk/gdkvulkancontext.c
+++ b/gdk/gdkvulkancontext.c
@@ -1194,6 +1194,7 @@ gdk_vulkan_save_pipeline_cache (GdkDisplay *display)
   g_free (data);
   g_free (display->vk_pipeline_cache_etag);
   display->vk_pipeline_cache_etag = etag;
+  display->vk_pipeline_cache_size = size;
 
   return TRUE;
 }