diff --git a/src/main/java/de/dennisguse/opentracks/settings/PreferencesUtils.java b/src/main/java/de/dennisguse/opentracks/settings/PreferencesUtils.java
index 93aedb890..5f19642b8 100644
--- a/src/main/java/de/dennisguse/opentracks/settings/PreferencesUtils.java
+++ b/src/main/java/de/dennisguse/opentracks/settings/PreferencesUtils.java
@@ -657,12 +657,12 @@ public static boolean shouldInstantExportAfterWorkout() {
     }
 
     public static TrackFilenameGenerator getTrackFileformatGenerator() {
-        String DEFAULT = resources.getString(R.string.export_filename_format_default);
-        TrackFilenameGenerator generator = new TrackFilenameGenerator(getString(R.string.export_filename_format_key, DEFAULT));
+        String defaultDate = resources.getString(R.string.export_filename_format_default);
+        TrackFilenameGenerator generator = new TrackFilenameGenerator(getString(R.string.export_filename_format_key, defaultDate));
         if (generator.isValid()) {
             return generator;
         } else {
-            return new TrackFilenameGenerator(DEFAULT);
+            return new TrackFilenameGenerator(defaultDate);
         }
     }