diff --git a/mozilla/content/xbl/builtin/unix/platformHTMLBindings.xml b/mozilla/content/xbl/builtin/unix/platformHTMLBindings.xml
index 8d7d4202afb..a126e45eb74 100644
--- a/mozilla/content/xbl/builtin/unix/platformHTMLBindings.xml
+++ b/mozilla/content/xbl/builtin/unix/platformHTMLBindings.xml
@@ -153,8 +153,8 @@
       <handler event="keypress" keycode="VK_INSERT" modifiers="shift" command="cmd_paste"/>
       <handler event="keypress" keycode="VK_LEFT" modifiers="control" command="cmd_wordPrevious"/>
       <handler event="keypress" keycode="VK_RIGHT" modifiers="control" command="cmd_wordNext"/>
-      <handler event="keypress" keycode="VK_LEFT" modifiers="control" command="cmd_selectWordPrevious"/>
-      <handler event="keypress" keycode="VK_RIGHT" modifiers="control" command="cmd_selectWordNext"/>
+      <handler event="keypress" keycode="VK_LEFT" modifiers="shift,control" command="cmd_selectWordPrevious"/>
+      <handler event="keypress" keycode="VK_RIGHT" modifiers="shift,control" command="cmd_selectWordNext"/>
       <handler event="keypress" keycode="VK_HOME" modifiers="shift,control" command="cmd_selectTop"/>
       <handler event="keypress" keycode="VK_END" modifiers="shift,control" command="cmd_selectBottom"/>
     </handlers>
diff --git a/mozilla/layout/xbl/builtin/unix/platformHTMLBindings.xml b/mozilla/layout/xbl/builtin/unix/platformHTMLBindings.xml
index 8d7d4202afb..a126e45eb74 100644
--- a/mozilla/layout/xbl/builtin/unix/platformHTMLBindings.xml
+++ b/mozilla/layout/xbl/builtin/unix/platformHTMLBindings.xml
@@ -153,8 +153,8 @@
       <handler event="keypress" keycode="VK_INSERT" modifiers="shift" command="cmd_paste"/>
       <handler event="keypress" keycode="VK_LEFT" modifiers="control" command="cmd_wordPrevious"/>
       <handler event="keypress" keycode="VK_RIGHT" modifiers="control" command="cmd_wordNext"/>
-      <handler event="keypress" keycode="VK_LEFT" modifiers="control" command="cmd_selectWordPrevious"/>
-      <handler event="keypress" keycode="VK_RIGHT" modifiers="control" command="cmd_selectWordNext"/>
+      <handler event="keypress" keycode="VK_LEFT" modifiers="shift,control" command="cmd_selectWordPrevious"/>
+      <handler event="keypress" keycode="VK_RIGHT" modifiers="shift,control" command="cmd_selectWordNext"/>
       <handler event="keypress" keycode="VK_HOME" modifiers="shift,control" command="cmd_selectTop"/>
       <handler event="keypress" keycode="VK_END" modifiers="shift,control" command="cmd_selectBottom"/>
     </handlers>