diff --git a/src/BulletSoftBody/btSoftBodyInternals.h b/src/BulletSoftBody/btSoftBodyInternals.h
index e637484b9..5ef8db193 100644
--- a/src/BulletSoftBody/btSoftBodyInternals.h
+++ b/src/BulletSoftBody/btSoftBodyInternals.h
@@ -70,9 +70,23 @@ public:
 	///getAabb returns the axis aligned bounding box in the coordinate frame of the given transform t.
 	virtual void getAabb(const btTransform& t,btVector3& aabbMin,btVector3& aabbMax) const
 	{
-		/* t should be identity */ 
-		aabbMin=m_body->m_bounds[0];
-		aabbMax=m_body->m_bounds[1];
+		/* t is usually identity, except when colliding against btCompoundShape. See Issue 512 */
+		const btVector3	mins=m_body->m_bounds[0];
+		const btVector3	maxs=m_body->m_bounds[1];
+		const btVector3	crns[]={t*btVector3(mins.x(),mins.y(),mins.z()),
+			t*btVector3(maxs.x(),mins.y(),mins.z()),
+			t*btVector3(maxs.x(),maxs.y(),mins.z()),
+			t*btVector3(mins.x(),maxs.y(),mins.z()),
+			t*btVector3(mins.x(),mins.y(),maxs.z()),
+			t*btVector3(maxs.x(),mins.y(),maxs.z()),
+			t*btVector3(maxs.x(),maxs.y(),maxs.z()),
+			t*btVector3(mins.x(),maxs.y(),maxs.z())};
+		aabbMin=aabbMax=crns[0];
+		for(int i=1;i<8;++i)
+		{
+			aabbMin.setMin(crns[i]);
+			aabbMax.setMax(crns[i]);
+		}
 	}