diff --git a/configs/ntosd-dm320/nsh/defconfig b/configs/ntosd-dm320/nsh/defconfig
index f8e1d831df4..73713510386 100644
--- a/configs/ntosd-dm320/nsh/defconfig
+++ b/configs/ntosd-dm320/nsh/defconfig
@@ -253,7 +253,9 @@ CONFIG_PREALLOC_TIMERS=8
 # FAT filesystem configuration
 # CONFIG_FS_FAT - Enable FAT filesystem support
 # CONFIG_FAT_SECTORSIZE - Max supported sector size
+# CONFIG_FS_ROMFS - Enable ROMFS filesystem support
 CONFIG_FS_FAT=n
+CONFIG_FS_ROMFS=n
 
 #
 # TCP/IP and UDP support via uIP
diff --git a/configs/sim/mount/defconfig b/configs/sim/mount/defconfig
index 97961565210..16b7cd741c4 100644
--- a/configs/sim/mount/defconfig
+++ b/configs/sim/mount/defconfig
@@ -208,7 +208,9 @@ CONFIG_PREALLOC_TIMERS=8
 # FAT filesystem configuration
 # CONFIG_FS_FAT - Enable FAT filesystem support
 # CONFIG_FAT_SECTORSIZE - Max supported sector size
+# CONFIG_FS_ROMFS - Enable ROMFS filesystem support
 CONFIG_FS_FAT=y
+CONFIG_FS_ROMFS=n
 
 #
 # TCP/IP and UDP support via uIP
diff --git a/configs/sim/nettest/defconfig b/configs/sim/nettest/defconfig
index 73b2ae3f8f2..e774a6713d2 100644
--- a/configs/sim/nettest/defconfig
+++ b/configs/sim/nettest/defconfig
@@ -1,5 +1,5 @@
 ############################################################################
-# sim/nettest/defconfig
+# configs/sim/nettest/defconfig
 #
 #   Copyright (C) 2007, 2008 Gregory Nutt. All rights reserved.
 #   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
@@ -208,7 +208,9 @@ CONFIG_PREALLOC_TIMERS=8
 # FAT filesystem configuration
 # CONFIG_FS_FAT - Enable FAT filesystem support
 # CONFIG_FAT_SECTORSIZE - Max supported sector size
+# CONFIG_FS_ROMFS - Enable ROMFS filesystem support
 CONFIG_FS_FAT=y
+CONFIG_FS_ROMFS=n
 
 #
 # TCP/IP and UDP support via uIP
diff --git a/configs/sim/ostest/defconfig b/configs/sim/ostest/defconfig
index 7acf0ef78a9..66def7eec0e 100644
--- a/configs/sim/ostest/defconfig
+++ b/configs/sim/ostest/defconfig
@@ -1,5 +1,5 @@
 ############################################################################
-# sim/defconfig
+# configs/sim/ostest/defconfig
 #
 #   Copyright (C) 2007, 2008 Gregory Nutt. All rights reserved.
 #   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
@@ -209,7 +209,9 @@ CONFIG_PREALLOC_TIMERS=8
 # FAT filesystem configuration
 # CONFIG_FS_FAT - Enable FAT filesystem support
 # CONFIG_FAT_SECTORSIZE - Max supported sector size
+# CONFIG_FS_ROMFS - Enable ROMFS filesystem support
 CONFIG_FS_FAT=y
+CONFIG_FS_ROMFS=n
 
 #
 # TCP/IP and UDP support via uIP
diff --git a/configs/sim/pashello/defconfig b/configs/sim/pashello/defconfig
index 5c694d5b538..3f0ac8bd639 100644
--- a/configs/sim/pashello/defconfig
+++ b/configs/sim/pashello/defconfig
@@ -1,5 +1,5 @@
 ############################################################################
-# configs/sim/defconfig
+# configs/sim/pashello/defconfig
 #
 #   Copyright (C) 2007, 2008 Gregory Nutt. All rights reserved.
 #   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
@@ -208,7 +208,9 @@ CONFIG_PREALLOC_TIMERS=8
 # FAT filesystem configuration
 # CONFIG_FS_FAT - Enable FAT filesystem support
 # CONFIG_FAT_SECTORSIZE - Max supported sector size
+# CONFIG_FS_ROMFS - Enable ROMFS filesystem support
 CONFIG_FS_FAT=y
+CONFIG_FS_ROMFS=n
 
 #
 # TCP/IP and UDP support via uIP