diff --git a/backend/webdav/webdav_internal_test.go b/backend/webdav/webdav_internal_test.go
index 20dee468b..c2c2d1dfa 100644
--- a/backend/webdav/webdav_internal_test.go
+++ b/backend/webdav/webdav_internal_test.go
@@ -29,7 +29,7 @@ func prepareServer(t *testing.T) (configmap.Simple, func()) {
 		what := fmt.Sprintf("%s %s: Header ", r.Method, r.URL.Path)
 		assert.Equal(t, headers[1], r.Header.Get(headers[0]), what+headers[0])
 		assert.Equal(t, headers[3], r.Header.Get(headers[2]), what+headers[2])
-		fmt.Fprintf(w, `<d:multistatus xmlns:d="DAV:" xmlns:s="http://sabredav.org/ns" xmlns:oc="http://owncloud.org/ns" xmlns:nc="http://nextcloud.org/ns">
+		_, err := fmt.Fprintf(w, `<d:multistatus xmlns:d="DAV:" xmlns:s="http://sabredav.org/ns" xmlns:oc="http://owncloud.org/ns" xmlns:nc="http://nextcloud.org/ns">
 <d:response>
  <d:href>/remote.php/webdav/</d:href>
  <d:propstat>
@@ -41,8 +41,8 @@ func prepareServer(t *testing.T) (configmap.Simple, func()) {
  </d:propstat>
 </d:response>
 </d:multistatus>`)
+		require.NoError(t, err)
 	})
-
 	// Make the test server
 	ts := httptest.NewServer(handler)
 
diff --git a/fs/config/configfile/configfile_test.go b/fs/config/configfile/configfile_test.go
index 2c2ba7e27..8ec7cd518 100644
--- a/fs/config/configfile/configfile_test.go
+++ b/fs/config/configfile/configfile_test.go
@@ -190,7 +190,8 @@ func TestConfigFileReload(t *testing.T) {
 	// Now write a new value on the end
 	out, err := os.OpenFile(config.GetConfigPath(), os.O_APPEND|os.O_WRONLY, 0777)
 	require.NoError(t, err)
-	fmt.Fprintln(out, "appended = what magic")
+	_, err = fmt.Fprintln(out, "appended = what magic")
+	require.NoError(t, err)
 	require.NoError(t, out.Close())
 
 	// And check we magically reloaded it