diff --git a/src/Mod/Part/App/PrimitiveFeature.cpp b/src/Mod/Part/App/PrimitiveFeature.cpp
index 579120daee..e3f44430d5 100644
--- a/src/Mod/Part/App/PrimitiveFeature.cpp
+++ b/src/Mod/Part/App/PrimitiveFeature.cpp
@@ -236,8 +236,8 @@ PROPERTY_SOURCE(Part::Line, Part::Primitive)
 Line::Line()
 {
     ADD_PROPERTY_TYPE(X1,(0.0),"Vertex 1 - Start",App::Prop_None,"X value of the start vertex");
-    ADD_PROPERTY_TYPE(Y1,(0.0),"Vertex 1 - Start",App::Prop_None,"Y value of the Start vertex");
-    ADD_PROPERTY_TYPE(Z1,(0.0),"Vertex 1 - Start",App::Prop_None,"Z value of the Start vertex");
+    ADD_PROPERTY_TYPE(Y1,(0.0),"Vertex 1 - Start",App::Prop_None,"Y value of the start vertex");
+    ADD_PROPERTY_TYPE(Z1,(0.0),"Vertex 1 - Start",App::Prop_None,"Z value of the start vertex");
     ADD_PROPERTY_TYPE(X2,(0.0),"Vertex 2 - Finish",App::Prop_None,"X value of the finish vertex");
     ADD_PROPERTY_TYPE(Y2,(0.0),"Vertex 2 - Finish",App::Prop_None,"Y value of the finish vertex");
     ADD_PROPERTY_TYPE(Z2,(1.0),"Vertex 2 - Finish",App::Prop_None,"Z value of the finish vertex");