Index: applications/editors/josm/plugins/wikipedia/src/org/wikipedia/gui/WikidataItemSearchDialog.java
===================================================================
--- applications/editors/josm/plugins/wikipedia/src/org/wikipedia/gui/WikidataItemSearchDialog.java	(revision 34095)
+++ applications/editors/josm/plugins/wikipedia/src/org/wikipedia/gui/WikidataItemSearchDialog.java	(revision 34149)
@@ -31,4 +31,5 @@
 import org.openstreetmap.josm.gui.util.GuiHelper;
 import org.openstreetmap.josm.tools.GBC;
+import org.openstreetmap.josm.tools.Utils;
 import org.wikipedia.WikipediaApp;
 import org.wikipedia.data.WikidataEntry;
@@ -105,5 +106,5 @@
             return;
         }
-        final String key = Tag.removeWhiteSpaces(targetKey.getEditor().getItem().toString());
+        final String key = Utils.removeWhiteSpaces(targetKey.getEditor().getItem().toString());
         final String value = selected.createWikipediaTag().getValue();
         WikipediaToggleDialog.AddWikipediaTagAction.addTag(new Tag(key, value));