diff --git a/src/Mod/Fem/femexamples/thermomech_flow1d.py b/src/Mod/Fem/femexamples/thermomech_flow1d.py
index d6733aad06..82e8976ac7 100644
--- a/src/Mod/Fem/femexamples/thermomech_flow1d.py
+++ b/src/Mod/Fem/femexamples/thermomech_flow1d.py
@@ -235,6 +235,7 @@ def setup(doc=None, solvertype="ccxtools"):
     outlet.OutletPressure = 0.1
     outlet.References = [(geom_obj, "Edge13")]
 
+    # self_weight_constraint
     self_weight = analysis.addObject(
         ObjectsFem.makeConstraintSelfWeight(doc, "ConstraintSelfWeight")
     )[0]