Index: src/app/ogr/qgsopenvectorlayerdialog.cpp
===================================================================
--- src/app/ogr/qgsopenvectorlayerdialog.cpp	(revision 12383)
+++ src/app/ogr/qgsopenvectorlayerdialog.cpp	(working copy)
@@ -346,6 +346,16 @@
                            protocolURI->text()
                          ) );
   }
+  else if ( radioSrcDirectory->isChecked()  )
+  {
+    if ( inputSrcDataset->text().isEmpty()  )
+    {
+      QMessageBox::information( this,
+                                tr( "Add directory"  ),
+                                tr( "Dataset not defined. Please enter valid dataset path and try again."  )  );
+      return;
+    }
+  }
   // Save the used encoding
   settings.setValue( "/UI/encoding", encoding() );