diff --git a/ChangeLog b/ChangeLog
index 25ce43ed1..affb5e501 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+20090129
+ - (tim) [contrib/cygwin/ssh-host-config] Patch from Corinna Vinschen.
+   If the CYGWIN environment variable is empty, the installer script
+   should not install the service with an empty CYGWIN variable, but
+   rather without setting CYGWNI entirely.
+
 20090128
  - (tim) [contrib/cygwin/ssh-host-config] Patch from Corinna Vinschen.
    Changes to work on Cygwin 1.5.x as well as on the new Cygwin 1.7.x.
@@ -5102,5 +5108,5 @@
    OpenServer 6 and add osr5bigcrypt support so when someone migrates
    passwords between UnixWare and OpenServer they will still work. OK dtucker@
 
-$Id: ChangeLog,v 1.5180 2009/01/28 20:50:04 tim Exp $
+$Id: ChangeLog,v 1.5181 2009/01/29 20:30:01 tim Exp $
 
diff --git a/contrib/cygwin/ssh-host-config b/contrib/cygwin/ssh-host-config
index d4f5f32d0..ec03f163d 100644
--- a/contrib/cygwin/ssh-host-config
+++ b/contrib/cygwin/ssh-host-config
@@ -314,10 +314,14 @@ install_service() {
 
         csih_check_user "${run_service_as}"
 
+	if [ -n "${csih_cygenv}" ]
+	then
+	  cygwin_env="-e CYGWIN=\"${csih_cygenv}\""
+	fi
         if [ -z "${password}" ]
         then
-	  if cygrunsrv -I sshd -d "CYGWIN sshd" -p /usr/sbin/sshd -a "-D" -y tcpip \
-             -e CYGWIN="${csih_cygenv}"
+	  if eval cygrunsrv -I sshd -d \"CYGWIN sshd\" -p /usr/sbin/sshd \
+			    -a "-D" -y tcpip ${cygwin_env}
           then
             echo
             csih_inform "The sshd service has been installed under the LocalSystem"
@@ -326,8 +330,9 @@ install_service() {
             csih_inform "will start automatically after the next reboot."
           fi
         else
-	  if cygrunsrv -I sshd -d "CYGWIN sshd" -p /usr/sbin/sshd -a "-D" -y tcpip \
-             -e CYGWIN="${csih_cygenv}" -u "${run_service_as}" -w "${password}"
+	  if eval cygrunsrv -I sshd -d \"CYGWIN sshd\" -p /usr/sbin/sshd \
+			    -a "-D" -y tcpip ${cygwin_env} \
+			    -u "${run_service_as}" -w "${password}"
           then
 	    echo
 	    csih_inform "The sshd service has been installed under the '${run_service_as}'"