diff --git a/include/usbhost/usbhost.h b/include/usbhost/usbhost.h
index f7cc52e..5332acd 100644
--- a/include/usbhost/usbhost.h
+++ b/include/usbhost/usbhost.h
@@ -23,6 +23,13 @@
 
 #include <stdint.h>
 
+#include <linux/version.h>
+#if LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 20)
+#include <linux/usb/ch9.h>
+#else
+#include <linux/usb_ch9.h>
+#endif
+
 struct usb_host_context;
 struct usb_endpoint_descriptor;