diff --git a/gax-httpjson/src/main/java/com/google/api/gax/httpjson/GaxHttpJsonProperties.java b/gax-httpjson/src/main/java/com/google/api/gax/httpjson/GaxHttpJsonProperties.java
index d3c9f4e7f..fab63c320 100644
--- a/gax-httpjson/src/main/java/com/google/api/gax/httpjson/GaxHttpJsonProperties.java
+++ b/gax-httpjson/src/main/java/com/google/api/gax/httpjson/GaxHttpJsonProperties.java
@@ -36,7 +36,7 @@
 @InternalApi
 public class GaxHttpJsonProperties {
   private static final Pattern DEFAULT_API_CLIENT_HEADER_PATTERN =
-      Pattern.compile("gl-java/.+ gapic/.* gax/.+ httpjson/.*");
+      Pattern.compile("gl-java/.+ gapic/.* gax/.+ rest/.*");
 
   /** Returns default api client header pattern (to facilitate testing) */
   public static Pattern getDefaultApiClientHeaderPattern() {
@@ -44,7 +44,7 @@ public static Pattern getDefaultApiClientHeaderPattern() {
   }
 
   public static String getHttpJsonTokenName() {
-    return "httpjson";
+    return "rest";
   }
 
   public static String getHttpJsonVersion() {
diff --git a/gax-httpjson/src/test/java/com/google/api/gax/httpjson/GaxHttpJsonPropertiesTest.java b/gax-httpjson/src/test/java/com/google/api/gax/httpjson/GaxHttpJsonPropertiesTest.java
index ca0814b19..487605a62 100644
--- a/gax-httpjson/src/test/java/com/google/api/gax/httpjson/GaxHttpJsonPropertiesTest.java
+++ b/gax-httpjson/src/test/java/com/google/api/gax/httpjson/GaxHttpJsonPropertiesTest.java
@@ -41,7 +41,7 @@ public class GaxHttpJsonPropertiesTest {
   public void testDefaultHeaderPattern() {
     assertTrue(
         GaxHttpJsonProperties.getDefaultApiClientHeaderPattern()
-            .matcher("gl-java/1.8_00 gapic/1.2.3-alpha gax/1.5.0 httpjson/1.7.0")
+            .matcher("gl-java/1.8_00 gapic/1.2.3-alpha gax/1.5.0 rest/1.7.0")
             .matches());
   }
 }