diff --git a/src/libtomahawk/DropJob.cpp b/src/libtomahawk/DropJob.cpp
index 5f1cea4bd..ee8b5f791 100644
--- a/src/libtomahawk/DropJob.cpp
+++ b/src/libtomahawk/DropJob.cpp
@@ -699,8 +699,21 @@ DropJob::removeDuplicates()
     foreach ( const Tomahawk::query_ptr& item, m_resultList )
     {
         bool contains = false;
+        Q_ASSERT( !item.isNull() );
+        if ( item.isNull() )
+        {
+            m_resultList.removeOne( item );
+            continue;
+        }
+        
         foreach( const Tomahawk::query_ptr &tmpItem, list )
         {
+            if ( tmpItem.isNull() )
+            {
+                list.removeOne( tmpItem );
+                continue;
+            }
+            
             if ( item->album() == tmpItem->album()
                  && item->artist() == tmpItem->artist()
                  && item->track() == tmpItem->track() )
@@ -726,10 +739,18 @@ DropJob::removeRemoteSources()
     QList< Tomahawk::query_ptr > list;
     foreach ( const Tomahawk::query_ptr& item, m_resultList )
     {
+        Q_ASSERT( !item.isNull() );
+        if ( item.isNull() )
+        {
+            m_resultList.removeOne( item );
+            continue;
+        }
+        
         bool hasLocalSource = false;
         foreach ( const Tomahawk::result_ptr& result, item->results() )
         {
-            if ( !result->collection()->source().isNull() && result->collection()->source()->isLocal() )
+            if ( !result->collection().isNull() && !result->collection()->source().isNull() &&
+                 !result->collection()->source().isNull() && result->collection()->source()->isLocal() )
                 hasLocalSource = true;
         }
         if ( hasLocalSource )