diff --git a/arch/alpha/lib/csum_partial_copy.c b/arch/alpha/lib/csum_partial_copy.c
index dc68efbe9367..1931a04af85a 100644
--- a/arch/alpha/lib/csum_partial_copy.c
+++ b/arch/alpha/lib/csum_partial_copy.c
@@ -13,6 +13,7 @@
 #include <linux/types.h>
 #include <linux/string.h>
 #include <linux/uaccess.h>
+#include <net/checksum.h>
 
 
 #define ldq_u(x,y) \