diff --git a/bin/sde-commit b/bin/sde-commit
index 9d580ec..5d67230 100755
--- a/bin/sde-commit
+++ b/bin/sde-commit
@@ -37,7 +37,7 @@ commit_abort() {
 	exit 1
 }
 
-shortopts='F:m:'
+shortopts='F:m:s'
 longopts='file:'
 options=$( getopt -o "$shortopts" -l "$longopts" -- "$@" )
 if [ $? -ne 0 ]; then
@@ -50,6 +50,7 @@ eval set -- "$options"
 
 logfile=
 message=
+signed=
 tmpfile=$SDEROOT/tmp/$$
 
 mkdir -p "$SDEROOT/tmp"
@@ -58,6 +59,7 @@ while [ $# -gt 0 ]; do
 	case "$1" in
 		-F|--file)	logfile="`readlink -f $2 2> /dev/null`"; shift ;;
 		-m)		message="$2"; shift ;;
+		-s)		signed=true; shift ;;
 
 		--)	shift; break ;;
 		*)	echo_abort 1 "Unknown argument '$1', aborting."
@@ -194,7 +196,7 @@ if [ -s $tmpfile.diff -o -s $tmpfile.status ]; then
 				continue
 			elif [ -d ".git" ]; then
 				# git commit
-				git commit --file $logfile && rm "$logfile" ; quit=1
+				git commit ${signed:+-s} --file $logfile && rm "$logfile" ; quit=1
 			elif [ -d ".svn" ]; then
 				# svn commit
 				svn commit --file $logfile -- $locations && rm "$logfile" ; quit=1