--- a/browser/components/preferences/in-content/search.xul
+++ b/browser/components/preferences/in-content/search.xul
@@ -40,19 +40,20 @@
     <groupbox id="oneClickSearchProvidersGroup" data-category="paneSearch">
       <caption label="&oneClickSearchEngines.label;"/>
       <label>&chooseWhichOneToDisplay.label;</label>
 
       <tree id="engineList" flex="1" rows="8" hidecolumnpicker="true" editable="true"
             seltype="single">
         <treechildren id="engineChildren" flex="1"/>
         <treecols>
-          <treecol id="engineShown" type="checkbox" editable="true"/>
-          <treecol id="engineName" flex="4" label="&engineNameColumn.label;"/>
-          <treecol id="engineKeyword" flex="1" label="&engineKeywordColumn.label;" editable="true"/>
+          <treecol id="engineShown" type="checkbox" editable="true" sortable="false"/>
+          <treecol id="engineName" flex="4" label="&engineNameColumn.label;" sortable="false"/>
+          <treecol id="engineKeyword" flex="1" label="&engineKeywordColumn.label;" editable="true"
+                   sortable="false"/>
         </treecols>
       </tree>
 
       <hbox>
         <button id="restoreDefaultSearchEngines"
                 label="&restoreDefaultSearchEngines.label;"
                 accesskey="&restoreDefaultSearchEngines.accesskey;"
                 />

--- a/browser/components/preferences/search.xul
+++ b/browser/components/preferences/search.xul
@@ -54,19 +54,21 @@
       <label>&chooseWhichOneToDisplay.label;</label>
 
       <tree id="engineList" flex="1" rows="8" hidecolumnpicker="true" editable="true"
             seltype="single" onselect="gSearchPane.onTreeSelect();"
             onkeypress="gSearchPane.onTreeKeyPress(event);">
         <treechildren id="engineChildren" flex="1"
                       ondragstart="onDragEngineStart(event);"/>
         <treecols>
-          <treecol id="engineShown" type="checkbox" style="min-width: 26px;" editable="true"/>
-          <treecol id="engineName" flex="4" label="&engineNameColumn.label;"/>
-          <treecol id="engineKeyword" flex="1" label="&engineKeywordColumn.label;" editable="true"/>
+          <treecol id="engineShown" type="checkbox" style="min-width: 26px;" editable="true"
+                   sortable="false"/>
+          <treecol id="engineName" flex="4" label="&engineNameColumn.label;" sortable="false"/>
+          <treecol id="engineKeyword" flex="1" label="&engineKeywordColumn.label;" editable="true"
+                   sortable="false"/>
         </treecols>
       </tree>
 
       <hbox>
         <button id="restoreDefaultSearchEngines"
                 label="&restoreDefaultSearchEngines.label;"
                 accesskey="&restoreDefaultSearchEngines.accesskey;"
                 oncommand="gSearchPane.onRestoreDefaults();"/>

--- a/toolkit/themes/shared/in-content/common.inc.css
+++ b/toolkit/themes/shared/in-content/common.inc.css
@@ -636,17 +636,17 @@ xul|treecol:not([hideheader="true"]),
 xul|treecolpicker {
   -moz-appearance: none;
   border: none;
   background-color: #ebebeb;
   color: #808080;
   padding: 5px 10px;
 }
 
-xul|treecol:not([hideheader="true"]):hover,
+xul|treecol:not([hideheader="true"]):not([sortable="false"]):hover,
 xul|treecolpicker:hover {
   background-color: #dadada;
   color: #333;
 }
 
 xul|treecol:not([hideheader="true"]):not(:first-child),
 xul|treecolpicker {
   -moz-border-start-width: 1px;
@@ -677,9 +677,9 @@ xul|treechildren::-moz-tree-row {
 
 /* Color needs to be set on tree cell in order to be applied */
 xul|treechildren::-moz-tree-cell-text {
   color: #333;
 }
 
 xul|treechildren::-moz-tree-cell-text(selected) {
   color: #fff;
-}
\ No newline at end of file
+}