diff --git a/omaha_request_action.cc b/omaha_request_action.cc
index d58612c..1becb8e 100644
--- a/omaha_request_action.cc
+++ b/omaha_request_action.cc
@@ -79,10 +79,10 @@
 
 static const char* kOmahaUpdaterVersion = "0.1.0.0";
 
-// X-GoogleUpdate headers.
-static const char* kXGoogleUpdateInteractivity = "X-GoogleUpdate-Interactivity";
-static const char* kXGoogleUpdateAppId = "X-GoogleUpdate-AppId";
-static const char* kXGoogleUpdateUpdater = "X-GoogleUpdate-Updater";
+// X-Goog-Update headers.
+static const char* kXGoogleUpdateInteractivity = "X-Goog-Update-Interactivity";
+static const char* kXGoogleUpdateAppId = "X-Goog-Update-AppId";
+static const char* kXGoogleUpdateUpdater = "X-Goog-Update-Updater";
 
 // updatecheck attributes (without the underscore prefix).
 static const char* kEolAttr = "eol";
@@ -762,7 +762,7 @@
                                     GetInstallDate(system_state_),
                                     system_state_));
 
-  // Set X-GoogleUpdate headers.
+  // Set X-Goog-Update headers.
   http_fetcher_->SetHeader(kXGoogleUpdateInteractivity,
                            params_->interactive() ? "fg" : "bg");
   http_fetcher_->SetHeader(kXGoogleUpdateAppId, params_->GetAppId());
diff --git a/omaha_request_action_unittest.cc b/omaha_request_action_unittest.cc
index 2f466dd..6bc5ba2 100644
--- a/omaha_request_action_unittest.cc
+++ b/omaha_request_action_unittest.cc
@@ -748,9 +748,9 @@
 
   // Check that the headers were set in the fetcher during the action. Note that
   // we set this request as "interactive".
-  EXPECT_EQ("fg", fetcher->GetHeader("X-GoogleUpdate-Interactivity"));
-  EXPECT_EQ(kTestAppId, fetcher->GetHeader("X-GoogleUpdate-AppId"));
-  EXPECT_NE("", fetcher->GetHeader("X-GoogleUpdate-Updater"));
+  EXPECT_EQ("fg", fetcher->GetHeader("X-Goog-Update-Interactivity"));
+  EXPECT_EQ(kTestAppId, fetcher->GetHeader("X-Goog-Update-AppId"));
+  EXPECT_NE("", fetcher->GetHeader("X-Goog-Update-Updater"));
 }
 
 TEST_F(OmahaRequestActionTest, ValidUpdateBlockedByConnection) {