diff --git a/src/org/openstreetmap/josm/actions/OpenFileAction.java b/src/org/openstreetmap/josm/actions/OpenFileAction.java
index cc8d8a8..62c0b3d 100644
--- a/src/org/openstreetmap/josm/actions/OpenFileAction.java
+++ b/src/org/openstreetmap/josm/actions/OpenFileAction.java
@@ -176,7 +176,9 @@ public class OpenFileAction extends DiskAccessAction {
 
         @Override
         protected void finish() {
-            Main.map.repaint();
+            if (Main.map != null) {
+                Main.map.repaint();
+            }
         }
 
         protected void alertFilesNotMatchingWithImporter(Collection<File> files, FileImporter importer) {