diff --git a/code/nel/src/pacs/primitive_world_image.cpp b/code/nel/src/pacs/primitive_world_image.cpp
index e8d0378e6..b669bbfe7 100644
--- a/code/nel/src/pacs/primitive_world_image.cpp
+++ b/code/nel/src/pacs/primitive_world_image.cpp
@@ -1395,7 +1395,7 @@ void CPrimitiveWorldImage::reaction (const CCollisionSurfaceDesc&	surfaceDesc, c
 void CPrimitiveWorldImage::setGlobalPosition (const UGlobalPosition& pos, CMoveContainer& container, CMovePrimitive &primitive, uint8 worldImage)
 {
 	// Cast type
-	nlassert (dynamic_cast<const CMoveContainer*>(&container));
+	nlassert (dynamic_cast<const CMoveContainer*>(&container) != NULL);
 	const CMoveContainer *cont=(const CMoveContainer*)&container;
 
 	if (!cont->getGlobalRetriever()) return;
diff --git a/code/nel/src/sound/group_controller.cpp b/code/nel/src/sound/group_controller.cpp
index b82373c3e..f56eb34a4 100644
--- a/code/nel/src/sound/group_controller.cpp
+++ b/code/nel/src/sound/group_controller.cpp
@@ -62,7 +62,7 @@ CGroupController::~CGroupController()
 
 void CGroupController::addSource(CSourceCommon *source)
 {
-	nlassert(this);
+	nlassert(this != NULL);
 
 	m_Sources.insert(source);
 	increaseSources();