diff --git a/dep/g3dlite/include/G3D/Vector3.h b/dep/g3dlite/include/G3D/Vector3.h
index ef1e39d821..1c42513b45 100644
--- a/dep/g3dlite/include/G3D/Vector3.h
+++ b/dep/g3dlite/include/G3D/Vector3.h
@@ -128,7 +128,7 @@ public:
     Axis primaryAxis() const;
 
     // assignment and comparison
-    Vector3& __fastcall operator= (const Vector3& rkVector);
+    Vector3& operator=(const Vector3& rkVector) = default;
     Vector3& operator=(const Any& a);
     bool operator== (const Vector3& rkVector) const;
     bool operator!= (const Vector3& rkVector) const;
@@ -627,14 +627,6 @@ inline float& Vector3::operator[] (int i) {
 }
 
 
-//----------------------------------------------------------------------------
-inline Vector3& Vector3::operator= (const Vector3& rkVector) {
-    x = rkVector.x;
-    y = rkVector.y;
-    z = rkVector.z;
-    return *this;
-}
-
 //----------------------------------------------------------------------------
 
 inline bool Vector3::fuzzyEq(const Vector3& other) const {