diff --git a/drivers/staging/rtl8187se/ieee80211/ieee80211.h b/drivers/staging/rtl8187se/ieee80211/ieee80211.h
index 04a48e7e76e6..c4ab683e8f61 100644
--- a/drivers/staging/rtl8187se/ieee80211/ieee80211.h
+++ b/drivers/staging/rtl8187se/ieee80211/ieee80211.h
@@ -29,6 +29,7 @@
 #include <linux/jiffies.h>
 #include <linux/timer.h>
 #include <linux/sched.h>
+#include <linux/semaphore.h>
 #include <linux/wireless.h>
 #include <linux/ieee80211.h>