diff --git a/configs/freedom-k66f/netnsh/defconfig b/configs/freedom-k66f/netnsh/defconfig
index b78e838d61..f7da08de50 100644
--- a/configs/freedom-k66f/netnsh/defconfig
+++ b/configs/freedom-k66f/netnsh/defconfig
@@ -264,6 +264,8 @@ CONFIG_KINETIS_ENETNTXBUFFERS=2
 # CONFIG_KINETIS_ENETUSEMII is not set
 CONFIG_KINETIS_ENET_MDIOPULLUP=y
 # CONFIG_KINETIS_ENET_NORXER is not set
+# CONFIG_KINETIS_EMAC_RMIICLKEXTAL is not set
+CONFIG_KINETIS_EMAC_RMIICLK1588CLKIN=y
 # CONFIG_KINETIS_EMAC_HPWORK is not set
 CONFIG_KINETIS_EMAC_LPWORK=y