diff --git a/configs/olimex-lpc1766stk/slip-httpd/defconfig b/configs/olimex-lpc1766stk/slip-httpd/defconfig
index 6989028dad0..d059bfbc36f 100644
--- a/configs/olimex-lpc1766stk/slip-httpd/defconfig
+++ b/configs/olimex-lpc1766stk/slip-httpd/defconfig
@@ -510,9 +510,9 @@ CONFIG_NET_GUARDSIZE=2
 #
 # CONFIG_NET_MULTILINK is not set
 # CONFIG_NET_ETHERNET is not set
-CONFIG_SLIP_NINTERFACES=1
-CONFIG_SLIP_STACKSIZE=2048
-CONFIG_SLIP_DEFPRIO=128
+CONFIG_NET_SLIPNINTERFACES=1
+CONFIG_NET_SLIPSTACKSIZE=2048
+CONFIG_NET_SLIPDEFPRIO=128
 # CONFIG_NET_TUN is not set
 
 #