--- xmoto-0.4.0/src/Collision.cpp	2008-01-18 22:48:25.000000000 +0100
+++ xmoto-0.4.0.new/src/Collision.cpp	2008-02-13 16:17:03.000000000 +0100
@@ -51,6 +51,12 @@
                                     } \
                                     (v).clear()
 
+
+  CollisionSystem::CollisionSystem()
+  {
+    m_pGrid = NULL; m_bDebugFlag=false;
+  }
+
   /*===========================================================================
   Reset collision system
   ===========================================================================*/
--- xmoto-0.4.0/src/Collision.h	2007-12-25 18:15:39.000000000 +0100
+++ xmoto-0.4.0.new/src/Collision.h	2008-02-13 16:01:10.000000000 +0100
@@ -147,7 +147,7 @@
   ===========================================================================*/
   class CollisionSystem {
   public:
-    CollisionSystem() {m_pGrid = NULL; m_bDebugFlag=false;}
+    CollisionSystem();
     ~CollisionSystem() {reset();}
     
     /* Methods */