2 files changed, 5 insertions, 3 deletions
diff --git a/support/src/test/java/libcore/java/security/StandardNames.java b/support/src/test/java/libcore/java/security/StandardNames.java
index 6b42a2e..bb9aeda 100644
--- a/support/src/test/java/libcore/java/security/StandardNames.java
+++ b/support/src/test/java/libcore/java/security/StandardNames.java
@@ -31,6 +31,7 @@ import java.util.HashSet;
 import java.util.Iterator;
 import java.util.LinkedHashSet;
 import java.util.List;
+import java.util.Locale;
 import java.util.Map;
 import java.util.Set;
 import javax.crypto.spec.DHPrivateKeySpec;
@@ -99,12 +100,12 @@ public final class StandardNames extends Assert {
             PROVIDER_ALGORITHMS.put(type, algorithms);
         }
         assertTrue("Duplicate " + type + " " + algorithm,
-                   algorithms.add(algorithm.toUpperCase()));
+                   algorithms.add(algorithm.toUpperCase(Locale.ROOT)));
     }
     private static void unprovide(String type, String algorithm) {
         Set<String> algorithms = PROVIDER_ALGORITHMS.get(type);
         assertNotNull(algorithms);
-        assertTrue(algorithm, algorithms.remove(algorithm.toUpperCase()));
+        assertTrue(algorithm, algorithms.remove(algorithm.toUpperCase(Locale.ROOT)));
         if (algorithms.isEmpty()) {
             assertNotNull(PROVIDER_ALGORITHMS.remove(type));
         }
diff --git a/support/src/test/java/tests/http/MockWebServer.java b/support/src/test/java/tests/http/MockWebServer.java
index 0e950c6..1b776b2 100644
--- a/support/src/test/java/tests/http/MockWebServer.java
+++ b/support/src/test/java/tests/http/MockWebServer.java
@@ -36,6 +36,7 @@ import java.util.ArrayList;
 import java.util.Collections;
 import java.util.Iterator;
 import java.util.List;
+import java.util.Locale;
 import java.util.Set;
 import java.util.concurrent.BlockingQueue;
 import java.util.concurrent.ConcurrentHashMap;
@@ -345,7 +346,7 @@ public final class MockWebServer {
         String header;
         while (!(header = readAsciiUntilCrlf(in)).isEmpty()) {
             headers.add(header);
-            String lowercaseHeader = header.toLowerCase();
+            String lowercaseHeader = header.toLowerCase(Locale.ROOT);
             if (contentLength == -1 && lowercaseHeader.startsWith("content-length:")) {
                 contentLength = Integer.parseInt(header.substring(15).trim());
             }