diff --git a/openmamba-update/openmamba-netsrpms b/openmamba-update/openmamba-netsrpms
index b990eb6..599281b 100755
--- a/openmamba-update/openmamba-netsrpms
+++ b/openmamba-update/openmamba-netsrpms
@@ -58,7 +58,12 @@ for pckname in $PACKAGES; do
 
    icon=`grep Icon= /usr/share/applications/openmamba-$pckname.desktop | sed "s|Icon=||"`
 
-   SRPM_VERSION=${SRPMVERSION[${pckname}]}-${SRPMRELEASE[${pckname}]}
+   SRPMVER="${SRPMVERSION[${pckname}]}"
+   if [ "$SRPMVER" ]; then
+      SRPM_VERSION=${SRPMVER}-${SRPMRELEASE[${pckname}]}
+   else
+      SRPM_VERSION=
+   fi
 
    RPM_INSTALLED=`rpm -q $pckname`
    [ $? -eq 0 ] || RPM_INSTALLED=
@@ -72,13 +77,13 @@ for pckname in $PACKAGES; do
    echo $"Last version:      $SRPM_VERSION"
    echo
 
-   if [ "$RPM_INSTALLED_VERSION" != "$SRPM_VERSION" ]; then
+   if [ "$SRPM_VERSION" -a "$RPM_INSTALLED_VERSION" != "$SRPM_VERSION" ]; then
       if [ "$RPM_INSTALLED_VERSION" ]; then
          UPDATE_NEEDED=1
       elif [ "$UPGRADE_MODE" ]; then
          continue
       fi
-   elif [ ! "$FORCE_MODE" ]; then
+   elif [ ! "$FORCE_MODE" -a "$SRPM_VERSION" ]; then
       continue
    fi