diff --git a/src/Mod/Fem/femexamples/ccx_cantilever_prescribeddisplacement.py b/src/Mod/Fem/femexamples/ccx_cantilever_prescribeddisplacement.py
index 1f6be2f938..1874a8432d 100644
--- a/src/Mod/Fem/femexamples/ccx_cantilever_prescribeddisplacement.py
+++ b/src/Mod/Fem/femexamples/ccx_cantilever_prescribeddisplacement.py
@@ -61,6 +61,8 @@ def setup(doc=None, solvertype="ccxtools"):
     # apply a prescribed displacement of 250 mm in -z on the front end face
 
     if solvertype == "z88":
+        # constraint displacement is not supported for Z88
+        # pass a not valid solver name for z88, thus no solver is created
         solvertype = "z88_not_valid"
 
     doc = setup_cantileverbase(doc, solvertype)