diff --git a/mozilla/webtools/bugzilla/Bugzilla/Search.pm b/mozilla/webtools/bugzilla/Bugzilla/Search.pm
index 261e1ae0af5..bf81451aec8 100644
--- a/mozilla/webtools/bugzilla/Bugzilla/Search.pm
+++ b/mozilla/webtools/bugzilla/Bugzilla/Search.pm
@@ -1049,6 +1049,7 @@ sub init {
          $chart < 0 || $params->param("field$chart-0-0") ;
          $chart++) {
         $chartid = $chart >= 0 ? $chart : "";
+        my @chartandlist = ();
         for ($row = 0 ;
              $params->param("field$chart-$row-0") ;
              $row++) {
@@ -1111,7 +1112,14 @@ sub init {
             }
             if (@orlist) {
                 @orlist = map("($_)", @orlist) if (scalar(@orlist) > 1);
-                push(@andlist, "(" . join(" OR ", @orlist) . ")");
+                push(@chartandlist, "(" . join(" OR ", @orlist) . ")");
+            }
+        }
+        if (@chartandlist) {
+            if ($params->param("negate$chart")) {
+                push(@andlist, "NOT(" . join(" AND ", @chartandlist) . ")");
+            } else {
+                push(@andlist, "(" . join(" AND ", @chartandlist) . ")");
             }
         }
     }
diff --git a/mozilla/webtools/bugzilla/query.cgi b/mozilla/webtools/bugzilla/query.cgi
index bd60e5b6703..e3c261d5989 100755
--- a/mozilla/webtools/bugzilla/query.cgi
+++ b/mozilla/webtools/bugzilla/query.cgi
@@ -357,7 +357,7 @@ for (my $chart = 0; $::FORM{"field$chart-0-0"}; $chart++) {
         }
         push(@rows, \@cols);
     }
-    push(@charts, \@rows);
+    push(@charts, {'rows' => \@rows, 'negate' => $::FORM{"negate$chart"}});
 }
 
 $default{'charts'} = \@charts;
diff --git a/mozilla/webtools/bugzilla/template/en/default/search/boolean-charts.html.tmpl b/mozilla/webtools/bugzilla/template/en/default/search/boolean-charts.html.tmpl
index ba88b67b4c2..6887321f4e4 100644
--- a/mozilla/webtools/bugzilla/template/en/default/search/boolean-charts.html.tmpl
+++ b/mozilla/webtools/bugzilla/template/en/default/search/boolean-charts.html.tmpl
@@ -57,7 +57,16 @@
 [% FOREACH chart = default.charts %]
   [% chartnum = loop.count - 1 %]
   <table>
-  [% FOREACH row = chart %]
+    <tr>
+      <input type="checkbox" id="negate[% chartnum FILTER html %]"
+             name="negate[% chartnum FILTER html %]" value="1"
+            [% "checked" IF chart.negate %]
+      >
+      <label for="negate[% chartnum FILTER html %]">
+        Not (negate this whole chart)
+      </label>
+    </tr>
+  [% FOREACH row = chart.rows %]
     [% rownum = loop.count - 1 %]
     <tr>
     [% FOREACH col = row %]