diff --git a/mobile/android/base/preferences/LocaleListPreference.java b/mobile/android/base/preferences/LocaleListPreference.java
index 206fecbbefe..5259354821f 100644
--- a/mobile/android/base/preferences/LocaleListPreference.java
+++ b/mobile/android/base/preferences/LocaleListPreference.java
@@ -172,6 +172,12 @@ public class LocaleListPreference extends ListPreference {
          *         on this device without known issues.
          */
         public boolean isUsable(CharacterValidator validator) {
+            if (Versions.preLollipop && this.tag.matches("[a-zA-Z]{3}.*")) {
+                // Earlier versions of Android can't load three-char locale code
+                // resources.
+                return false;
+            }
+
             // Oh, for Java 7 switch statements.
             if (this.tag.equals("bn-IN")) {
                 // Bengali sometimes has an English label if the Bengali script
@@ -295,8 +301,11 @@ public class LocaleListPreference extends ListPreference {
         values[0] = "";
 
         for (int i = 0; i < count; ++i) {
-            entries[i + 1] = descriptors[i].getDisplayName();
-            values[i + 1] = descriptors[i].getTag();
+            final String displayName = descriptors[i].getDisplayName();
+            final String tag = descriptors[i].getTag();
+            Log.v(LOG_TAG, displayName + " => " + tag);
+            entries[i + 1] = displayName;
+            values[i + 1] = tag;
         }
 
         setEntries(entries);