diff --git a/include/drm/drm_file.h b/include/drm/drm_file.h
index 84ac79219e4c..6710b612e2f6 100644
--- a/include/drm/drm_file.h
+++ b/include/drm/drm_file.h
@@ -32,6 +32,7 @@
 
 #include <linux/types.h>
 #include <linux/completion.h>
+#include <linux/idr.h>
 
 #include <uapi/drm/drm.h>