diff --git a/tools/mkromfsimg.sh b/tools/mkromfsimg.sh
index 2092488368..ccd8163979 100755
--- a/tools/mkromfsimg.sh
+++ b/tools/mkromfsimg.sh
@@ -33,7 +33,8 @@ headerfile=nsh_romfsimg.h
 nofat=$1
 usefat=true
 topdir=$2
-usage="USAGE: $0 [-nofat] <topdir>"
+rcs_fname=$3
+usage="USAGE: $0 [-nofat] <topdir> [<rcsfile>]"
 
 # Verify if we have the optional "-nofat"
 
@@ -42,6 +43,7 @@ if [ "$nofat" == "-nofat" ]; then
   usefat=false
 else
   topdir=$1
+  rcs_fname=$2
 fi
 
 if [ -z "$topdir" -o ! -d "$topdir" ]; then
@@ -50,6 +52,13 @@ if [ -z "$topdir" -o ! -d "$topdir" ]; then
   exit 1
 fi
 
+# Verify if we have the optional "rcs_fname"
+
+if [ ! -z "$rcs_fname" ]; then
+  rcstemplate=$rcs_fname
+  echo "Target template is $rcstemplate"
+fi
+
 # Extract all values from the .config in the $topdir that contains all of the NuttX
 # configuration settings.  The .config file was intended to be include-able by makefiles
 # and source-able by scripts.  Unfortunately,there are too many syntactic difference