diff --git a/Demos/BasicDemo/BasicDemo.cpp b/Demos/BasicDemo/BasicDemo.cpp
index 7f12eac9c..3e88e45c9 100644
--- a/Demos/BasicDemo/BasicDemo.cpp
+++ b/Demos/BasicDemo/BasicDemo.cpp
@@ -207,7 +207,7 @@ void	BasicDemo::exitPhysics()
 	}
 
 	//delete collision shapes
-	for (unsigned int j=0;j<m_collisionShapes.size();j++)
+	for (int j=0;j<m_collisionShapes.size();j++)
 	{
 		btCollisionShape* shape = m_collisionShapes[j];
 		delete shape;
diff --git a/Extras/GIMPACTBullet/btGIMPACTMeshShape.cpp b/Extras/GIMPACTBullet/btGIMPACTMeshShape.cpp
index 886346338..e245ca1be 100644
--- a/Extras/GIMPACTBullet/btGIMPACTMeshShape.cpp
+++ b/Extras/GIMPACTBullet/btGIMPACTMeshShape.cpp
@@ -299,7 +299,8 @@ void	btGIMPACTMeshShape::processAllTriangles(btTriangleCallback* callback,const
 	GDYNAMIC_ARRAY collision_result;
 
 	GIM_TRIMESH * ptrimesh;
-	int i,j;
+	int i;
+        unsigned int j;
 	vec3f trivec[3];
 	btVector3 btrivec[3];
 	GUINT * boxesresult;