diff --git a/drivers/net/phy/Kconfig b/drivers/net/phy/Kconfig
index 902495afcb381..ea7571a2b39be 100644
--- a/drivers/net/phy/Kconfig
+++ b/drivers/net/phy/Kconfig
@@ -220,6 +220,7 @@ config MEDIATEK_GE_PHY
 
 config MICREL_PHY
 	tristate "Micrel PHYs"
+	depends on PTP_1588_CLOCK_OPTIONAL
 	help
 	  Supports the KSZ9021, VSC8201, KS8001 PHYs.