--- /dev/null
+diff --git a/ioctl/rtl871x_ioctl_linux.c b/ioctl/rtl871x_ioctl_linux.c
+index 6f707de..561c50f 100755
+--- a/ioctl/rtl871x_ioctl_linux.c
++++ b/ioctl/rtl871x_ioctl_linux.c
+@@ -52,6 +52,9 @@
+ #define iwe_stream_add_point(a, b, c, d, e) iwe_stream_add_point(b, c, d, e)\r
+ #endif\r
+ \r
++#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,22))\r
++#define strcasecmp(s1, s2) strcmp(s1, s2)\r
++#endif\r
+ \r
+ #define RTL_IOCTL_WPA_SUPPLICANT SIOCIWFIRSTPRIV+0x1E\r
+ \r