--- a/toolkit/content/widgets/autocomplete.xml
+++ b/toolkit/content/widgets/autocomplete.xml
@@ -304,26 +304,16 @@
                 onset="return this.setAttribute('tabscrolling', val); return val;"
                 onget="return this.getAttribute('tabscrolling') == 'true';"/>
 
       <!-- disable key navigation handling in the popup results -->
       <property name="disableKeyNavigation"
                 onset="this.setAttribute('disablekeynavigation', val); return val;"
                 onget="return this.getAttribute('disablekeynavigation') == 'true';"/>
 
-      <!-- option to completely ignore any blur events while
-           searches are still going on.  This is useful so that nothing
-           gets autopicked if the window is required to lose focus for
-           some reason (eg in LDAP autocomplete, another window may be
-           brought up so that the user can enter a password to authenticate
-           to an LDAP server).  -->
-      <property name="ignoreBlurWhileSearching"
-                onset="this.setAttribute('ignoreblurwhilesearching', val); return val;"
-                onget="return this.getAttribute('ignoreblurwhilesearching') == 'true';"/>
-
       <!-- option to highlight entries that don't have any matches -->
       <property name="highlightNonMatches"
                 onset="this.setAttribute('highlightnonmatches', val); return val;"
                 onget="return this.getAttribute('highlightnonmatches') == 'true';"/>
 
       <!-- =================== PRIVATE MEMBERS =================== -->
 
       <!-- ::::::::::::: autocomplete controller ::::::::::::: -->