diff --git a/src/Graphic3d/Graphic3d_PolygonOffset.hxx b/src/Graphic3d/Graphic3d_PolygonOffset.hxx
index 74c9ed1618..91c774c33a 100644
--- a/src/Graphic3d/Graphic3d_PolygonOffset.hxx
+++ b/src/Graphic3d/Graphic3d_PolygonOffset.hxx
@@ -24,7 +24,7 @@ struct Graphic3d_PolygonOffset
   Standard_ShortReal       Units;
 
   //! Empty constructor.
-  Graphic3d_PolygonOffset() : Mode(Aspect_POM_Fill), Factor (1.0f), Units  (0.0f) {}
+  Graphic3d_PolygonOffset() : Mode(Aspect_POM_Fill), Factor (1.0f), Units (1.0f) {}
 };
 
 #endif // _Graphic3d_PolygonOffset_HeaderFile