diff --git a/brouter-routing-app/src/main/java/btools/routingapp/BInstallerActivity.java b/brouter-routing-app/src/main/java/btools/routingapp/BInstallerActivity.java
index 31320dc..e14b800 100644
--- a/brouter-routing-app/src/main/java/btools/routingapp/BInstallerActivity.java
+++ b/brouter-routing-app/src/main/java/btools/routingapp/BInstallerActivity.java
@@ -59,7 +59,12 @@ public class BInstallerActivity extends Activity {
     setContentView(R.layout.activity_binstaller);
     mBInstallerView = findViewById(R.id.BInstallerView);
     mBInstallerView.setOnClickListener(
-      view -> mBInstallerView.toggleDownload()
+      view -> {
+        if (mBInstallerView.getSelectedTiles(MASK_DELETED_RD5).size() > 0) {
+          showConfirmDelete();
+        }
+        mBInstallerView.toggleDownload();
+      }
     );
     mDownloadInfo = findViewById(R.id.view_download_progress);
     mDownloadInfoText = findViewById(R.id.textViewDownloadProgress);
@@ -72,14 +77,6 @@ public class BInstallerActivity extends Activity {
     scanExistingFiles();
   }
 
-  private String baseNameForTile(int tileIndex) {
-    int lon = (tileIndex % 72) * 5 - 180;
-    int lat = (tileIndex / 72) * 5 - 90;
-    String slon = lon < 0 ? "W" + (-lon) : "E" + lon;
-    String slat = lat < 0 ? "S" + (-lat) : "N" + lat;
-    return slon + "_" + slat;
-  }
-
   private void deleteRawTracks() {
     File modeDir = new File(mBaseDir, "brouter/modes");
     String[] fileNames = modeDir.list();
@@ -149,7 +146,7 @@ public class BInstallerActivity extends Activity {
           .setTitle("Confirm Delete")
           .setMessage("Really delete?").setPositiveButton("Yes", new DialogInterface.OnClickListener() {
           public void onClick(DialogInterface dialog, int id) {
-            mBInstallerView.deleteSelectedTiles();
+            deleteSelectedTiles();
           }
         }).setNegativeButton("No", new DialogInterface.OnClickListener() {
           public void onClick(DialogInterface dialog, int id) {
@@ -199,6 +196,14 @@ public class BInstallerActivity extends Activity {
     }
   }
 
+  private void deleteSelectedTiles() {
+    ArrayList<Integer> selectedTiles = mBInstallerView.getSelectedTiles(MASK_DELETED_RD5);
+    for (int tileIndex : selectedTiles) {
+      new File(mBaseDir, "brouter/segments4/" + baseNameForTile(tileIndex) + ".rd5").delete();
+    }
+    scanExistingFiles();
+  }
+
   private int tileForBaseName(String basename) {
     String uname = basename.toUpperCase(Locale.ROOT);
     int idx = uname.indexOf("_");
@@ -214,6 +219,14 @@ public class BInstallerActivity extends Activity {
     return (ilon + 180) / 5 + 72 * ((ilat + 90) / 5);
   }
 
+  protected String baseNameForTile(int tileIndex) {
+    int lon = (tileIndex % 72) * 5 - 180;
+    int lat = (tileIndex / 72) * 5 - 90;
+    String slon = lon < 0 ? "W" + (-lon) : "E" + lon;
+    String slat = lat < 0 ? "S" + (-lat) : "N" + lat;
+    return slon + "_" + slat;
+  }
+
   public class DownloadReceiver extends BroadcastReceiver {
 
     @Override
diff --git a/brouter-routing-app/src/main/java/btools/routingapp/BInstallerView.java b/brouter-routing-app/src/main/java/btools/routingapp/BInstallerView.java
index af90c5c..e8d82f6 100644
--- a/brouter-routing-app/src/main/java/btools/routingapp/BInstallerView.java
+++ b/brouter-routing-app/src/main/java/btools/routingapp/BInstallerView.java
@@ -86,7 +86,6 @@ public class BInstallerView extends View {
     }
 
     tileStatus = new int[72 * 36];
-    scanExistingFiles();
 
     float scaleX = imgwOrig / ((float) bmp.getWidth());
     float scaley = imghOrig / ((float) bmp.getHeight());
@@ -97,10 +96,6 @@ public class BInstallerView extends View {
     mat.postScale(viewscale, viewscale);
   }
 
-  private void scanExistingFiles() {
-
-  }
-
   public void setAvailableSize(long availableSize) {
     this.availableSize = availableSize;
   }
@@ -119,6 +114,20 @@ public class BInstallerView extends View {
     invalidate();
   }
 
+  public ArrayList<Integer> getSelectedTiles(int tileMask) {
+    ArrayList<Integer> selectedTiles = new ArrayList<>();
+    for (int ix = 0; ix < 72; ix++) {
+      for (int iy = 0; iy < 36; iy++) {
+        int tileIndex = gridPos2Tileindex(ix, iy);
+        if ((tileStatus[tileIndex] & tileMask) != 0 && BInstallerSizes.getRd5Size(tileIndex) > 0) {
+          selectedTiles.add(tileIndex);
+        }
+      }
+    }
+
+    return selectedTiles;
+  }
+
   @Override
   public void setOnClickListener(OnClickListener listener) {
     mOnClickListener = listener;
@@ -137,11 +146,6 @@ public class BInstallerView extends View {
   }
 
   public void toggleDownload() {
-    if (delTiles > 0) {
-      ((BInstallerActivity) getContext()).showConfirmDelete();
-      return;
-    }
-
     int min_size = Integer.MAX_VALUE;
 
     ArrayList<Integer> downloadList = new ArrayList<>();
@@ -298,19 +302,6 @@ public class BInstallerView extends View {
       }
   }
 
-  public void deleteSelectedTiles() {
-    for (int ix = 0; ix < 72; ix++) {
-      for (int iy = 0; iy < 36; iy++) {
-        int tidx = gridPos2Tileindex(ix, iy);
-        if ((tileStatus[tidx] & MASK_DELETED_RD5) != 0) {
-          new File(baseDir, "brouter/segments4/" + baseNameForTile(tidx) + ".rd5").delete();
-        }
-      }
-    }
-    scanExistingFiles();
-    invalidate();
-  }
-
   @Override
   public boolean onTouchEvent(MotionEvent event) {