diff --git a/toolkit/components/viewsource/content/viewSource.xul b/toolkit/components/viewsource/content/viewSource.xul
index 3fcb57efb24..41c15817a8d 100644
--- a/toolkit/components/viewsource/content/viewSource.xul
+++ b/toolkit/components/viewsource/content/viewSource.xul
@@ -51,6 +51,10 @@
            oncommand="document.getElementById('FindToolbar').onFindAgainCommand(false);"/>
   <command id="cmd_findPrevious"
            oncommand="document.getElementById('FindToolbar').onFindAgainCommand(true);"/>
+#ifdef XP_MACOSX
+  <command id="cmd_findSelection"
+           oncommand="document.getElementById('FindToolbar').onFindSelectionCommand();"/>
+#endif
   <command id="cmd_reload" oncommand="ViewSourceReload();"/>
   <command id="cmd_goToLine" oncommand="ViewSourceGoToLine();" disabled="true"/>
   <command id="cmd_highlightSyntax" oncommand="highlightSyntax();"/>
@@ -86,6 +90,9 @@
     <key id="key_find" key="&findOnCmd.commandkey;" command="cmd_find" modifiers="accel"/>
     <key id="key_findAgain" key="&findAgainCmd.commandkey;" command="cmd_findAgain" modifiers="accel"/>
     <key id="key_findPrevious" key="&findAgainCmd.commandkey;" command="cmd_findPrevious" modifiers="accel,shift"/>
+#ifdef XP_MACOSX
+    <key id="key_findSelection" key="&findSelectionCmd.commandkey;" command="cmd_findSelection" modifiers="accel"/>
+#endif
     <key keycode="&findAgainCmd.commandkey2;" command="cmd_findAgain"/>
     <key keycode="&findAgainCmd.commandkey2;"  command="cmd_findPrevious" modifiers="shift"/>
 
diff --git a/toolkit/locales/en-US/chrome/global/viewSource.dtd b/toolkit/locales/en-US/chrome/global/viewSource.dtd
index 4957c881495..1a294b87711 100644
--- a/toolkit/locales/en-US/chrome/global/viewSource.dtd
+++ b/toolkit/locales/en-US/chrome/global/viewSource.dtd
@@ -71,6 +71,7 @@ you can use these alternative items. Otherwise, their values should be empty.  -
 <!ENTITY findAgainCmd.accesskey "g">
 <!ENTITY findAgainCmd.commandkey "g">
 <!ENTITY findAgainCmd.commandkey2 "VK_F3">
+<!ENTITY findSelectionCmd.commandkey "e">
 
 <!ENTITY backCmd.label "Back">
 <!ENTITY backCmd.accesskey "B">