--- a/mobile/android/app/src/photon/java/org/mozilla/gecko/toolbar/TabCounter.java
+++ b/mobile/android/app/src/photon/java/org/mozilla/gecko/toolbar/TabCounter.java
@@ -14,16 +14,18 @@ import android.util.AttributeSet;
 import android.util.TypedValue;
 import android.view.LayoutInflater;
 
 import org.mozilla.gecko.R;
 import org.mozilla.gecko.widget.themed.ThemedImageView;
 import org.mozilla.gecko.widget.themed.ThemedRelativeLayout;
 import org.mozilla.gecko.widget.themed.ThemedTextView;
 
+import java.text.NumberFormat;
+
 public class TabCounter extends ThemedRelativeLayout {
 
     private final ThemedImageView box;
     private final ThemedImageView bar;
     private final ThemedTextView text;
 
     private final AnimatorSet animationSet;
     private int count;
@@ -188,17 +190,17 @@ public class TabCounter extends ThemedRe
         // Trigger animations.
         animationSet.start();
     }
 
     private String formatForDisplay(int count) {
         if (count > MAX_VISIBLE_TABS) {
             return SO_MANY_TABS_OPEN;
         }
-        return String.valueOf(count);
+        return NumberFormat.getInstance().format(count);
     }
 
     private void adjustTextSize(int newCount) {
         final float oldRatio = (this.count < MAX_VISIBLE_TABS && this.count >= 10) ? TWO_DIGITS_SIZE_RATIO : ONE_DIGIT_SIZE_RATIO;
         final float newRatio = (newCount < MAX_VISIBLE_TABS && newCount >= 10) ? TWO_DIGITS_SIZE_RATIO : ONE_DIGIT_SIZE_RATIO;
 
         if (this.count == 0 || newRatio != oldRatio) {
             final int sizeInPixel = (int) (box.getWidth() * newRatio);

--- a/mobile/android/base/java/org/mozilla/gecko/BrowserApp.java
+++ b/mobile/android/base/java/org/mozilla/gecko/BrowserApp.java
@@ -2910,16 +2910,17 @@ public class BrowserApp extends GeckoApp
     }
 
     @Override
     public void onLocaleReady(final String locale) {
         Log.d(LOGTAG, "onLocaleReady: " + locale);
         super.onLocaleReady(locale);
 
         HomePanelsManager.getInstance().onLocaleReady(locale);
+        mBrowserToolbar.onLocaleReady(locale);
 
         if (mMenu != null) {
             mMenu.clear();
             onCreateOptionsMenu(mMenu);
         }
     }
 
     @Override

--- a/mobile/android/base/java/org/mozilla/gecko/toolbar/BrowserToolbar.java
+++ b/mobile/android/base/java/org/mozilla/gecko/toolbar/BrowserToolbar.java
@@ -536,16 +536,21 @@ public abstract class BrowserToolbar ext
         switch (msg) {
             case SELECTED:
             case LOAD_ERROR:
             case LOCATION_CHANGE:
                 isSwitchingTabs = false;
         }
     }
 
+    public void onLocaleReady(final String locale) {
+        final Tabs tabs = Tabs.getInstance();
+        tabsCounter.setCount(tabs.getDisplayCount());
+    }
+
     /**
      * Updates the progress bar percentage and hides/shows it depending on the loading state of the
      * currently selected tab.
      */
     private void updateProgressBarState() {
         final Tab selectedTab = Tabs.getInstance().getSelectedTab();
         // The selected tab may be null if GeckoApp (and thus the
         // selected tab) are not yet initialized (bug 1090287).