diff --git a/plugins/other/scsi_queue b/plugins/other/scsi_queue
index 1a391d64..3fadb465 100755
--- a/plugins/other/scsi_queue
+++ b/plugins/other/scsi_queue
@@ -54,7 +54,7 @@ X and Y are translated into a regular expression like:
 # SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 # ==================================================================== 
 
-# $Id: scsi_queue 13409 2010-07-26 14:58:15Z tra $
+# $Id: scsi_queue 13630 2010-08-31 15:29:14Z tra $
 
 # Note to self:
 # The fields in /proc/scsi/sg/devices are:
@@ -84,7 +84,7 @@ def bailout(msg):
 def print_config(devices,filter_from,filter_through):
 
     title_qualification = ''
-    if devfilter_regex:
+    if filter_from and filter_through:
         title_qualification = ' for devices sd%s through sd%s' % (filter_from,filter_through)
 
     print 'graph_title SCSI queue busy values' + title_qualification
@@ -217,6 +217,8 @@ if n_args > 2:
 devfilter_regex = None
 called_as = os.path.basename(sys.argv[0])
 match = re.match(my_canonical_name+'_([^_])_through_([^_])', called_as)
+filter_from = None
+filter_through = None
 if match:
     filter_from    = match.group(1)
     filter_through = match.group(2)