diff --git a/vtm/src/org/oscim/layers/marker/ItemizedLayer.java b/vtm/src/org/oscim/layers/marker/ItemizedLayer.java
index de3ad17f..8de388d5 100644
--- a/vtm/src/org/oscim/layers/marker/ItemizedLayer.java
+++ b/vtm/src/org/oscim/layers/marker/ItemizedLayer.java
@@ -43,8 +43,8 @@ public class ItemizedLayer<Item extends MarkerInterface> extends MarkerLayer<Ite
     protected OnItemGestureListener<Item> mOnItemGestureListener;
     protected int mDrawnItemsLimit = Integer.MAX_VALUE;
 
-    public ItemizedLayer(Map map, MarkerSymbol defaulMarker) {
-        this(map, new ArrayList<Item>(), defaulMarker, null);
+    public ItemizedLayer(Map map, MarkerSymbol defaultMarker) {
+        this(map, new ArrayList<Item>(), defaultMarker, null);
     }
 
     public ItemizedLayer(Map map, List<Item> list,
diff --git a/vtm/src/org/oscim/layers/marker/MarkerLayer.java b/vtm/src/org/oscim/layers/marker/MarkerLayer.java
index c09d9175..20d1b1ae 100644
--- a/vtm/src/org/oscim/layers/marker/MarkerLayer.java
+++ b/vtm/src/org/oscim/layers/marker/MarkerLayer.java
@@ -28,7 +28,7 @@ import org.oscim.layers.Layer;
 import org.oscim.map.Map;
 
 /**
- * Draws a list of {@link MarkerItem} as markers to a map. The item with the
+ * Draws a list of {@link MarkerInterface} as markers to a map. The item with the
  * lowest index is drawn as last and therefore the 'topmost' marker. It also
  * gets checked for onTap first. This class is generic, because you then you get
  * your custom item-class passed back in onTap(). << TODO
@@ -53,7 +53,7 @@ public abstract class MarkerLayer<Item extends MarkerInterface> extends Layer {
     public MarkerLayer(Map map, MarkerSymbol defaultSymbol) {
         super(map);
 
-        mMarkerRenderer = new MarkerRenderer((MarkerLayer<MarkerItem>) this, defaultSymbol);
+        mMarkerRenderer = new MarkerRenderer((MarkerLayer<MarkerInterface>) this, defaultSymbol);
         mRenderer = mMarkerRenderer;
     }
 
diff --git a/vtm/src/org/oscim/layers/marker/MarkerRenderer.java b/vtm/src/org/oscim/layers/marker/MarkerRenderer.java
index b9904549..594632a1 100644
--- a/vtm/src/org/oscim/layers/marker/MarkerRenderer.java
+++ b/vtm/src/org/oscim/layers/marker/MarkerRenderer.java
@@ -35,7 +35,7 @@ public class MarkerRenderer extends BucketRenderer {
 
     private final SymbolBucket mSymbolLayer;
     private final float[] mBox = new float[8];
-    private final MarkerLayer<MarkerItem> mMarkerLayer;
+    private final MarkerLayer<MarkerInterface> mMarkerLayer;
     private final Point mMapPoint = new Point();
 
     /**
@@ -51,7 +51,7 @@ public class MarkerRenderer extends BucketRenderer {
     private InternalItem[] mItems;
 
     static class InternalItem {
-        MarkerItem item;
+        MarkerInterface item;
         boolean visible;
         boolean changes;
         float x, y;
@@ -64,7 +64,7 @@ public class MarkerRenderer extends BucketRenderer {
         }
     }
 
-    public MarkerRenderer(MarkerLayer<MarkerItem> markerLayer, MarkerSymbol defaultSymbol) {
+    public MarkerRenderer(MarkerLayer<MarkerInterface> markerLayer, MarkerSymbol defaultSymbol) {
         mSymbolLayer = new SymbolBucket();
         mMarkerLayer = markerLayer;
         mDefaultMarker = defaultSymbol;