diff --git a/drivers/staging/rtl8192su/r8192U_core.c b/drivers/staging/rtl8192su/r8192U_core.c
index 1aade3f4426..66274d7666f 100644
--- a/drivers/staging/rtl8192su/r8192U_core.c
+++ b/drivers/staging/rtl8192su/r8192U_core.c
@@ -24,6 +24,7 @@
  * Jerry chuang <wlanfae@realtek.com>
  */
 
+#include <linux/vmalloc.h>
 
 #undef LOOP_TEST
 #undef DUMP_RX