diff --git a/datalink814_ge/src/linklayer/linklayer814.c b/datalink814_ge/src/linklayer/linklayer814.c
index c798c82..e3297c4 100644
--- a/datalink814_ge/src/linklayer/linklayer814.c
+++ b/datalink814_ge/src/linklayer/linklayer814.c
@@ -504,7 +504,7 @@ uint32_t L2_GetFrameLen(L2_FRAME_TYPE l2FrameType) {
  * @return  L1 frame type.
  *
  ******************************************************************************/
-#ifdef TEST_200KBPS
+#ifndef TEST_200KBPS
 L1_FRAME_TYPE L2_L2frame2L1frame(L2_FRAME_TYPE l2Frame) {
  	switch (l2Frame) {
  	case L2_INTER_SCAN_FRAME: