diff --git a/configs/sim/udgram/defconfig b/configs/sim/udgram/defconfig
index 641c01ecb99..6a2ce0d88e1 100644
--- a/configs/sim/udgram/defconfig
+++ b/configs/sim/udgram/defconfig
@@ -385,6 +385,8 @@ CONFIG_NET_NACTIVESOCKETS=16
 # Unix Domain Socket Support
 #
 CONFIG_NET_LOCAL=y
+# CONFIG_NET_LOCAL_STREAM is not set
+CONFIG_NET_LOCAL_DGRAM=y
 
 #
 # TCP/IP Networking
diff --git a/configs/sim/ustream/defconfig b/configs/sim/ustream/defconfig
index 7e453bd1beb..37bdcf61a24 100644
--- a/configs/sim/ustream/defconfig
+++ b/configs/sim/ustream/defconfig
@@ -385,6 +385,8 @@ CONFIG_NET_NACTIVESOCKETS=16
 # Unix Domain Socket Support
 #
 CONFIG_NET_LOCAL=y
+CONFIG_NET_LOCAL_STREAM=y
+# CONFIG_NET_LOCAL_DGRAM is not set
 
 #
 # TCP/IP Networking