diff --git a/src/core/qgsvectorlayerundocommand.cpp b/src/core/qgsvectorlayerundocommand.cpp
index ba14c73752a..db049c49d34 100644
--- a/src/core/qgsvectorlayerundocommand.cpp
+++ b/src/core/qgsvectorlayerundocommand.cpp
@@ -47,6 +47,7 @@ void QgsVectorLayerUndoCommandAddFeature::undo()
 #ifdef QGISDEBUG
   QgsFeatureMap::const_iterator it = mBuffer->mAddedFeatures.find( mFeature.id() );
   Q_ASSERT( it != mBuffer->mAddedFeatures.end() );
+  Q_UNUSED( it );
 #endif
   mBuffer->mAddedFeatures.remove( mFeature.id() );