diff --git a/sys/compat/linuxkpi/common/include/linux/device.h b/sys/compat/linuxkpi/common/include/linux/device.h
index 313a6318b92..3b4f4c618f2 100644
--- a/sys/compat/linuxkpi/common/include/linux/device.h
+++ b/sys/compat/linuxkpi/common/include/linux/device.h
@@ -49,6 +49,8 @@
 enum irqreturn	{ IRQ_NONE = 0, IRQ_HANDLED, IRQ_WAKE_THREAD, };
 typedef enum irqreturn	irqreturn_t;
 
+struct device;
+
 struct class {
 	const char	*name;
 	struct module	*owner;