diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
index d6dc66f629..f360e33f68 100644
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -227,7 +227,7 @@ if ENC28J60
 config ENC28J60_NINTERFACES
 	int "Number of physical ENC28J60"
 	default 1
-	range 1,1
+	range 1 1
 	---help---
 		Specifies the number of physical ENC28J60
 		devices that will be supported.
@@ -306,7 +306,7 @@ if ENCX24J600
 config ENC28J60_NINTERFACES
 	int "Number of physical ENCX24J600"
 	default 1
-	range 1,1
+	range 1 1
 	---help---
 		Specifies the number of physical ENCX24J600
 		devices that will be supported.