diff --git a/auth/auth_test.go b/auth/auth_test.go
index c0c8f91f..0223f8b2 100644
--- a/auth/auth_test.go
+++ b/auth/auth_test.go
@@ -1452,10 +1452,10 @@ func checkBaseClient(client *Client, wantProjectID string) error {
 		return fmt.Errorf("version = %q; want = %q", version, wantVersion)
 	}
 
-	xGoogApiClientHeader := req.Header.Get("x-goog-api-client")
-	wantXGoogApiClientHeader := fmt.Sprintf("gl-go/%s fire-admin/%s", runtime.Version(), testVersion)
-	if xGoogApiClientHeader != wantXGoogApiClientHeader {
-		return fmt.Errorf("x-goog-api-client header = %q; want = %q", xGoogApiClientHeader, wantXGoogApiClientHeader)
+	xGoogAPIClientHeader := req.Header.Get("x-goog-api-client")
+	wantXGoogAPIClientHeader := fmt.Sprintf("gl-go/%s fire-admin/%s", runtime.Version(), testVersion)
+	if xGoogAPIClientHeader != wantXGoogAPIClientHeader {
+		return fmt.Errorf("x-goog-api-client header = %q; want = %q", xGoogAPIClientHeader, wantXGoogAPIClientHeader)
 	}
 
 	return nil
diff --git a/messaging/messaging_test.go b/messaging/messaging_test.go
index a782da8c..a57e5c7e 100644
--- a/messaging/messaging_test.go
+++ b/messaging/messaging_test.go
@@ -1395,9 +1395,9 @@ func checkFCMRequest(t *testing.T, b []byte, tr *http.Request, want map[string]i
 	if h := tr.Header.Get("X-FIREBASE-CLIENT"); h != clientVersion {
 		t.Errorf("X-FIREBASE-CLIENT = %q; want = %q", h, clientVersion)
 	}
-	xGoogApiClientHeader := "gl-go/" + runtime.Version() + " fire-admin/" + testMessagingConfig.Version
-	if h := tr.Header.Get("x-goog-api-client"); h != xGoogApiClientHeader {
-		t.Errorf("x-goog-api-client header = %q; want = %q", h, xGoogApiClientHeader)
+	xGoogAPIClientHeader := "gl-go/" + runtime.Version() + " fire-admin/" + testMessagingConfig.Version
+	if h := tr.Header.Get("x-goog-api-client"); h != xGoogAPIClientHeader {
+		t.Errorf("x-goog-api-client header = %q; want = %q", h, xGoogAPIClientHeader)
 	}
 }