diff --git a/df_datalink_sp/src/networking/phy_layer/phy_reg.h b/df_datalink_sp/src/networking/phy_layer/phy_reg.h
index 49b2361..5de9c4a 100644
--- a/df_datalink_sp/src/networking/phy_layer/phy_reg.h
+++ b/df_datalink_sp/src/networking/phy_layer/phy_reg.h
@@ -10,7 +10,7 @@
  * History:
  * [2021-11-16]: Initial version.
  * [2022-06-18]: New branch for glink control purpose:
- *               -Add poll modephysical layer will start Tx/Rx procedure
+ *               -Add poll mode physical layer will start Tx/Rx procedure
  * 				  at specific time stamp.
  * [2023-04-24]: Porting for DUIFEI.
  *