diff --git a/src/de/schildbach/pte/AbstractHafasLegacyProvider.java b/src/de/schildbach/pte/AbstractHafasLegacyProvider.java
index b7e3eb0d..86c5e5e9 100644
--- a/src/de/schildbach/pte/AbstractHafasLegacyProvider.java
+++ b/src/de/schildbach/pte/AbstractHafasLegacyProvider.java
@@ -28,6 +28,7 @@ import java.io.InputStream;
 import java.io.InputStreamReader;
 import java.nio.charset.Charset;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.Calendar;
 import java.util.Collections;
 import java.util.Date;
@@ -2984,8 +2985,7 @@ public abstract class AbstractHafasLegacyProvider extends AbstractHafasProvider
                     comment);
         } else {
             final Set<Line.Attr> attrSet = new HashSet<>();
-            for (final Line.Attr attr : attrs)
-                attrSet.add(attr);
+            attrSet.addAll(Arrays.asList(attrs));
             return new Line(null, network, product, normalizedName, lineStyle(network, product, normalizedName),
                     attrSet, comment);
         }