diff --git a/drivers/misc/vmw_balloon.c b/drivers/misc/vmw_balloon.c
index 518e2dec2aa2..5e9122cd3898 100644
--- a/drivers/misc/vmw_balloon.c
+++ b/drivers/misc/vmw_balloon.c
@@ -45,6 +45,7 @@
 #include <linux/seq_file.h>
 #include <linux/vmw_vmci_defs.h>
 #include <linux/vmw_vmci_api.h>
+#include <linux/io.h>
 #include <asm/hypervisor.h>
 
 MODULE_AUTHOR("VMware, Inc.");