diff --git a/drivers/video/tridentfb.c b/drivers/video/tridentfb.c
index 03a9c35..c6c7756 100644
--- a/drivers/video/tridentfb.c
+++ b/drivers/video/tridentfb.c
@@ -19,6 +19,7 @@
 #include <linux/fb.h>
 #include <linux/init.h>
 #include <linux/pci.h>
+#include <linux/slab.h>
 
 #include <linux/delay.h>
 #include <video/vga.h>