--- a/browser/locales/en-US/chrome/browser/browser.properties
+++ b/browser/locales/en-US/chrome/browser/browser.properties
@@ -586,18 +586,18 @@ service.toolbarbutton.label=Services
 service.toolbarbutton.tooltiptext=Services
 
 # LOCALIZATION NOTE (social.install.description): %1$S is the hostname of the social provider, %2$S is brandShortName (e.g. Firefox)
 service.install.description=Would you like to enable services from %1$S to display in your %2$S toolbar and sidebar?
 service.install.ok.label=Enable Services
 service.install.ok.accesskey=E
 
 # These are visible when opening the popup inside the bookmarks sidebar
-sidebar.moveToLeft=Move sidebar to left
-sidebar.moveToRight=Move sidebar to right
+sidebar.moveToLeft=Move Sidebar to Left
+sidebar.moveToRight=Move Sidebar to Right
 
 # LOCALIZATION NOTE (social.markpageMenu.label): %S is the name of the social provider
 social.markpageMenu.label=Save Page to %S
 # LOCALIZATION NOTE (social.marklinkMenu.label): %S is the name of the social provider
 social.marklinkMenu.label=Save Link to %S
 
 # LOCALIZATION NOTE (social.error.message): %1$S is brandShortName (e.g. Firefox), %2$S is the name of the social provider
 social.error.message=%1$S is unable to connect with %2$S right now.