diff --git a/arch/arm/src/kinetis/kinetis_enet.c b/arch/arm/src/kinetis/kinetis_enet.c
index 0bd4f5c1143..8d4bcc11e9b 100644
--- a/arch/arm/src/kinetis/kinetis_enet.c
+++ b/arch/arm/src/kinetis/kinetis_enet.c
@@ -147,6 +147,7 @@
  *
  * The Tower SER board uses a KSZ8041 PHY.
  * The Freedom K64F board uses a KSZ8081 PHY
+ * The Freedom K66F board uses a KSZ8081 PHY
  */
 
 #if defined(CONFIG_ETH0_PHY_KSZ8041)