diff --git a/sys/compat/linuxkpi/common/include/linux/types.h b/sys/compat/linuxkpi/common/include/linux/types.h
--- a/sys/compat/linuxkpi/common/include/linux/types.h
+++ b/sys/compat/linuxkpi/common/include/linux/types.h
@@ -63,6 +63,7 @@
 typedef off_t loff_t;
 typedef vm_paddr_t resource_size_t;
 typedef uint16_t __bitwise__ __sum16;
+typedef uint32_t __bitwise__ __wsum;
 typedef unsigned long pgoff_t;
 typedef unsigned __poll_t;