diff --git a/src/ifcblenderexport/blenderbim/bim/import_ifc.py b/src/ifcblenderexport/blenderbim/bim/import_ifc.py
index 8adf6a1c1e..a3fbe5f6b0 100644
--- a/src/ifcblenderexport/blenderbim/bim/import_ifc.py
+++ b/src/ifcblenderexport/blenderbim/bim/import_ifc.py
@@ -787,8 +787,10 @@ class IfcImporter:
             collection.children.link(u_axes)
             v_axes = bpy.data.collections.new("VAxes")
             collection.children.link(v_axes)
-            self.create_grid_axes(grid.UAxes, u_axes, element_matrix)
-            self.create_grid_axes(grid.VAxes, v_axes, element_matrix)
+            if grid.UAxes: # Revit is known to create invalid grids
+                self.create_grid_axes(grid.UAxes, u_axes, element_matrix)
+            if grid.VAxes: # Revit is known to create invalid grids
+                self.create_grid_axes(grid.VAxes, v_axes, element_matrix)
             if grid.WAxes:
                 w_axes = bpy.data.collections.new("WAxes")
                 collection.children.link(w_axes)
@@ -1903,8 +1905,11 @@ class IfcImporter:
                 return self.place_object_in_spatial_tree(container, obj)
             elif element.is_a("IfcGrid"):
                 grid_collection = bpy.data.collections.get(obj.name)
-                self.spatial_structure_elements[container.GlobalId]["blender"].children.link(grid_collection)
-                grid_collection.objects.link(obj)
+                if grid_collection:
+                    self.spatial_structure_elements[container.GlobalId]["blender"].children.link(grid_collection)
+                    grid_collection.objects.link(obj)
+                else: # Revit can create invalid grid objects
+                    self.spatial_structure_elements[container.GlobalId]["blender"].objects.link(obj)
             else:
                 self.spatial_structure_elements[container.GlobalId]["blender"].objects.link(obj)
         elif hasattr(element, "Decomposes") and element.Decomposes: