diff --git a/drivers/gpu/drm/ttm/ttm_page_alloc.c b/drivers/gpu/drm/ttm/ttm_page_alloc.c
index 6ca9b27..2ad2dc9 100644
--- a/drivers/gpu/drm/ttm/ttm_page_alloc.c
+++ b/drivers/gpu/drm/ttm/ttm_page_alloc.c
@@ -36,6 +36,7 @@
 #include <linux/mm_types.h>
 #include <linux/module.h>
 #include <linux/mm.h>
+#include <linux/seq_file.h> /* for seq_printf */
 
 #include <asm/atomic.h>
 #include <asm/agp.h>