diff --git a/LEGO1/mxvector.h b/LEGO1/mxvector.h
index 7922f143..f4117ebb 100644
--- a/LEGO1/mxvector.h
+++ b/LEGO1/mxvector.h
@@ -152,8 +152,8 @@ class MxVector3Data : public MxVector3
   void CopyFrom(MxVector3Data *p_other) {
     EqualsImpl(p_other->m_data);
 
-    float *src = this->storage;
-    float *dest = p_other->storage;
+    float *dest = this->storage;
+    float *src = p_other->storage;
     for (size_t i = sizeof(storage) / sizeof(float); i > 0; --i)
       *dest++ = *src++; 
   }