Index: /applications/editors/josm/plugins/terracer/src/terracer/HouseNumberInputDialog.java
===================================================================
--- /applications/editors/josm/plugins/terracer/src/terracer/HouseNumberInputDialog.java	(revision 33838)
+++ /applications/editors/josm/plugins/terracer/src/terracer/HouseNumberInputDialog.java	(revision 33839)
@@ -348,5 +348,5 @@
             interpolation.add(tr("All"));
             interpolation.add(tr("Even/Odd"));
-            if (Main.pref.getInteger(INTERPOLATION, 2) == 1) {
+            if (Main.pref.getInt(INTERPOLATION, 2) == 1) {
                 interpolation.select(tr("All"));
             } else {
Index: /applications/editors/josm/plugins/terracer/src/terracer/HouseNumberInputHandler.java
===================================================================
--- /applications/editors/josm/plugins/terracer/src/terracer/HouseNumberInputHandler.java	(revision 33838)
+++ /applications/editors/josm/plugins/terracer/src/terracer/HouseNumberInputHandler.java	(revision 33839)
@@ -445,6 +445,6 @@
      */
     public void saveValues() {
-        Main.pref.put(HouseNumberInputDialog.HANDLE_RELATION, doHandleRelation());
-        Main.pref.put(HouseNumberInputDialog.KEEP_OUTLINE, doKeepOutline());
+        Main.pref.putBoolean(HouseNumberInputDialog.HANDLE_RELATION, doHandleRelation());
+        Main.pref.putBoolean(HouseNumberInputDialog.KEEP_OUTLINE, doKeepOutline());
         Main.pref.put(HouseNumberInputDialog.INTERPOLATION, stepSize().toString());
     }