diff --git a/core/java/android/net/NetworkConfig.java b/core/java/android/net/NetworkConfig.java
index 3cc0bc5eae..5d95f41c6c 100644
--- a/core/java/android/net/NetworkConfig.java
+++ b/core/java/android/net/NetworkConfig.java
@@ -17,6 +17,7 @@
 package android.net;
 
 import android.util.Log;
+import java.util.Locale;
 
 /**
  * Describes the buildtime configuration of a network.
@@ -63,7 +64,7 @@ public class NetworkConfig {
      */
     public NetworkConfig(String init) {
         String fragments[] = init.split(",");
-        name = fragments[0].trim().toLowerCase();
+        name = fragments[0].trim().toLowerCase(Locale.ROOT);
         type = Integer.parseInt(fragments[1]);
         radio = Integer.parseInt(fragments[2]);
         priority = Integer.parseInt(fragments[3]);
diff --git a/core/java/android/net/ProxyProperties.java b/core/java/android/net/ProxyProperties.java
index cd799da9d7..9c4772b90f 100644
--- a/core/java/android/net/ProxyProperties.java
+++ b/core/java/android/net/ProxyProperties.java
@@ -25,6 +25,7 @@ import android.util.Log;
 import java.net.InetAddress;
 import java.net.InetSocketAddress;
 import java.net.UnknownHostException;
+import java.util.Locale;
 
 /**
  * A container class for the http proxy info
@@ -87,7 +88,7 @@ public class ProxyProperties implements Parcelable {
         if (mExclusionList == null) {
             mParsedExclusionList = new String[0];
         } else {
-            String splitExclusionList[] = exclusionList.toLowerCase().split(",");
+            String splitExclusionList[] = exclusionList.toLowerCase(Locale.ROOT).split(",");
             mParsedExclusionList = new String[splitExclusionList.length * 2];
             for (int i = 0; i < splitExclusionList.length; i++) {
                 String s = splitExclusionList[i].trim();