diff --git a/src/helma/framework/core/SkinFile.java b/src/helma/framework/core/SkinFile.java
index a7709385..10652458 100644
--- a/src/helma/framework/core/SkinFile.java
+++ b/src/helma/framework/core/SkinFile.java
@@ -69,10 +69,7 @@ public final class SkinFile implements Updatable {
 
 	if (!file.exists ()) {
 	    // remove skin from  prototype
-	    if (prototype != null) {
-	        prototype.skins.remove (name);
-	        prototype.updatables.remove (file.getName());
-	    }
+	    remove ();
 	} else {
 	    // we only need to update if the skin has already been initialized
 	    if (skin != null)
@@ -90,10 +87,19 @@ public final class SkinFile implements Updatable {
 	} catch (IOException x) {
 	    app.logEvent ("Error reading Skin "+file+": "+x);
 	}
-	
+
 	lastmod = file.lastModified ();
     }
 
+    public void remove () {
+	if (prototype != null) {
+	    prototype.skins.remove (name);
+	    if (file != null)
+	        prototype.updatables.remove (file.getName());
+	}
+    }
+
+
     public Skin getSkin () {
 	if (skin == null)
 	    read ();
@@ -103,7 +109,7 @@ public final class SkinFile implements Updatable {
     public String getName () {
 	return name;
     }
-	
+
     public String toString () {
 	return prototype.getName()+"/"+file.getName();
     }
diff --git a/src/helma/objectmodel/db/DbMapping.java b/src/helma/objectmodel/db/DbMapping.java
index 0685f06d..a9c884d8 100644
--- a/src/helma/objectmodel/db/DbMapping.java
+++ b/src/helma/objectmodel/db/DbMapping.java
@@ -237,6 +237,13 @@ public final class DbMapping implements Updatable {
     }
 
 
+    /** 
+     * Method in interface Updatable.
+     */
+    public void remove () {
+	// do nothing, removing of type properties is not implemented.
+    }
+
     /**
      * Get a JDBC connection for this DbMapping.
      */