Index: trunk/test/unit/org/openstreetmap/josm/TestUtils.java
===================================================================
--- trunk/test/unit/org/openstreetmap/josm/TestUtils.java	(revision 14153)
+++ trunk/test/unit/org/openstreetmap/josm/TestUtils.java	(revision 14157)
@@ -48,4 +48,5 @@
 import org.openstreetmap.josm.io.Compression;
 import org.openstreetmap.josm.testutils.FakeGraphics;
+import org.openstreetmap.josm.testutils.mockers.JOptionPaneSimpleMocker;
 import org.openstreetmap.josm.testutils.mockers.WindowMocker;
 import org.openstreetmap.josm.tools.JosmRuntimeException;
@@ -419,4 +420,5 @@
             // Inspired by https://issues.apache.org/jira/browse/SOLR-11606
             new WindowMocker();
+            new JOptionPaneSimpleMocker();
         } catch (UnsupportedOperationException e) {
             Assume.assumeNoException(e);