diff --git a/src/Mod/Fem/femobjects/_FemConstraintSelfWeight.py b/src/Mod/Fem/femobjects/_FemConstraintSelfWeight.py
index 3d01f871b4..b22e843467 100644
--- a/src/Mod/Fem/femobjects/_FemConstraintSelfWeight.py
+++ b/src/Mod/Fem/femobjects/_FemConstraintSelfWeight.py
@@ -35,19 +35,19 @@ class _FemConstraintSelfWeight:
             "App::PropertyFloat",
             "Gravity_x",
             "Gravity",
-            "set the gravity component in the x direction"
+            "Gravity direction: set the x-component of the normalized gravity vector"
         )
         obj.addProperty(
             "App::PropertyFloat",
             "Gravity_y",
             "Gravity",
-            "set the gravity component in the y direction"
+            "Gravity direction: set the y-component of the normalized gravity vector"
         )
         obj.addProperty(
             "App::PropertyFloat",
             "Gravity_z",
             "Gravity",
-            "set the gravity component in the z direction"
+            "Gravity direction: set the z-component of the normalized gravity vector"
         )
         obj.Gravity_x = 0.0
         obj.Gravity_y = 0.0
diff --git a/src/Mod/Fem/femsolver/calculix/writer.py b/src/Mod/Fem/femsolver/calculix/writer.py
index c2d7d26261..cc60673861 100644
--- a/src/Mod/Fem/femsolver/calculix/writer.py
+++ b/src/Mod/Fem/femsolver/calculix/writer.py
@@ -1099,13 +1099,14 @@ class FemInputWriterCcx(writerbase.FemInputWriter):
             f.write("** " + selwei_obj.Label + "\n")
             f.write("*DLOAD\n")
             f.write(
+                # elset, GRAV, magnitude, direction x, dir y ,dir z
                 "{},GRAV,{},{},{},{}\n"
                 .format(
                     self.ccx_eall,
-                    self.gravity,
-                    selwei_obj.Gravity_x,
-                    selwei_obj.Gravity_y,
-                    selwei_obj.Gravity_z
+                    self.gravity,  # actual magnitude of gravity vector
+                    selwei_obj.Gravity_x,  # coordinate x of normalized gravity vector
+                    selwei_obj.Gravity_y,  # y
+                    selwei_obj.Gravity_z  # z
                 )
             )
             f.write("\n")