diff --git a/vtm-android/src/org/oscim/android/canvas/AndroidCanvas.java b/vtm-android/src/org/oscim/android/canvas/AndroidCanvas.java
index 71180702..13d7bcf3 100644
--- a/vtm-android/src/org/oscim/android/canvas/AndroidCanvas.java
+++ b/vtm-android/src/org/oscim/android/canvas/AndroidCanvas.java
@@ -18,6 +18,7 @@
  */
 package org.oscim.android.canvas;
 
+import android.graphics.Color;
 import android.graphics.PorterDuff;
 
 import org.oscim.backend.canvas.Bitmap;
@@ -74,7 +75,7 @@ public class AndroidCanvas implements Canvas {
 
     @Override
     public void fillColor(int color) {
-        canvas.drawColor(color, PorterDuff.Mode.CLEAR);
+        canvas.drawColor(color, color == Color.TRANSPARENT ? PorterDuff.Mode.CLEAR : PorterDuff.Mode.SRC_OVER);
     }
 
     @Override
diff --git a/vtm-desktop/src/org/oscim/awt/AwtCanvas.java b/vtm-desktop/src/org/oscim/awt/AwtCanvas.java
index 810fb43f..9faed424 100644
--- a/vtm-desktop/src/org/oscim/awt/AwtCanvas.java
+++ b/vtm-desktop/src/org/oscim/awt/AwtCanvas.java
@@ -162,7 +162,7 @@ public class AwtCanvas implements Canvas {
     public void fillColor(int color) {
         java.awt.Color awtColor = color == Color.TRANSPARENT ? TRANSPARENT : new java.awt.Color(color);
         Composite originalComposite = this.canvas.getComposite();
-        this.canvas.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC));
+        this.canvas.setComposite(AlphaComposite.getInstance(color == Color.TRANSPARENT ? AlphaComposite.CLEAR : AlphaComposite.SRC_OVER));
         this.canvas.setColor(awtColor);
         this.canvas.fillRect(0, 0, getWidth(), getHeight());
         this.canvas.setComposite(originalComposite);