diff --git a/os_dep/linux/rtw_android.c b/os_dep/linux/rtw_android.c
index a807602..fc2f8d8 100644
--- a/os_dep/linux/rtw_android.c
+++ b/os_dep/linux/rtw_android.c
@@ -38,6 +38,10 @@
 #include <linux/irq.h>
 #endif
 
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(4, 0, 0))
+#define strncasecmp strnicmp
+#endif
+
 extern void macstr2num(u8 *dst, u8 *src);
 
 const char *android_wifi_cmd_str[ANDROID_WIFI_CMD_MAX] = {
@@ -286,7 +290,7 @@ int rtw_android_cmdstr_to_num(char *cmdstr)
 {
 	int cmd_num;
 	for(cmd_num=0 ; cmd_num<ANDROID_WIFI_CMD_MAX; cmd_num++)
-		if(0 == strnicmp(cmdstr , android_wifi_cmd_str[cmd_num], strlen(android_wifi_cmd_str[cmd_num])) )
+		if(0 == strncasecmp(cmdstr , android_wifi_cmd_str[cmd_num], strlen(android_wifi_cmd_str[cmd_num])) )
 			break;
 
 	return cmd_num;