diff --git a/src/Mod/Fem/PyObjects/_FemConstraintBodyHeatSource.py b/src/Mod/Fem/PyObjects/_FemConstraintBodyHeatSource.py
index fb7c38f0e3..8cadfa1905 100644
--- a/src/Mod/Fem/PyObjects/_FemConstraintBodyHeatSource.py
+++ b/src/Mod/Fem/PyObjects/_FemConstraintBodyHeatSource.py
@@ -31,7 +31,7 @@ from . import FemConstraint
 
 class Proxy(FemConstraint.Proxy):
 
-    Type = "Fem::FemConstraintBodyHeatSource"
+    Type = "Fem::ConstraintBodyHeatSource"
 
     def __init__(self, obj):
         super(Proxy, self).__init__(obj)
diff --git a/src/Mod/Fem/femsolver/elmer/writer.py b/src/Mod/Fem/femsolver/elmer/writer.py
index ece37dc380..bc105a0f1a 100644
--- a/src/Mod/Fem/femsolver/elmer/writer.py
+++ b/src/Mod/Fem/femsolver/elmer/writer.py
@@ -262,7 +262,7 @@ class Writer(object):
             self._handled(obj)
 
     def _handleHeatBodyForces(self, bodies):
-        obj = self._getSingleMember("Fem::FemConstraintBodyHeatSource")
+        obj = self._getSingleMember("Fem::ConstraintBodyHeatSource")
         if obj is not None:
             for name in bodies:
                 heatSource = getFromUi(obj.HeatFlux, "W/kg", "L^2*T^-3")