diff --git a/src/blenderbim/blenderbim/bim/module/material/prop.py b/src/blenderbim/blenderbim/bim/module/material/prop.py
index 5967b4d896..29beb20de8 100644
--- a/src/blenderbim/blenderbim/bim/module/material/prop.py
+++ b/src/blenderbim/blenderbim/bim/module/material/prop.py
@@ -120,6 +120,11 @@ def get_contexts(self, context):
 
 
 def update_material_name(self: "Material", context: bpy.types.Context) -> None:
+    # No need to update anything if it's either category
+    # or ifc_definition_id is not yet set
+    # (which occurs when Material still in the process of creation).
+    if self.is_category or not self.ifc_definition_id:
+        return
     ifc_file = tool.Ifc.get()
     name = self.name
     material = ifc_file.by_id(self.ifc_definition_id)
diff --git a/src/blenderbim/blenderbim/tool/material.py b/src/blenderbim/blenderbim/tool/material.py
index 31c1054e48..790e61a5cd 100644
--- a/src/blenderbim/blenderbim/tool/material.py
+++ b/src/blenderbim/blenderbim/tool/material.py
@@ -92,6 +92,7 @@ class Material(blenderbim.core.tool.Material):
             get_name = lambda x: "Unnamed"
         materials = sorted(tool.Ifc.get().by_type(material_type), key=get_name)
         categories = defaultdict(list)
+
         if material_type == "IfcMaterial":
             category_index_to_reselect = None
 
@@ -112,8 +113,9 @@ class Material(blenderbim.core.tool.Material):
 
                 for material in mats if cat.is_expanded else []:
                     new = props.materials.add()
-                    new.ifc_definition_id = material.id()
+                    # Assign name before assigning ifc_definition_id to avoid triggering IFC update.
                     new.name = get_name(material)
+                    new.ifc_definition_id = material.id()
                     new.total_elements = len(
                         ifcopenshell.util.element.get_elements_by_material(tool.Ifc.get(), material)
                     )
@@ -124,8 +126,9 @@ class Material(blenderbim.core.tool.Material):
             return
         for material in materials:
             new = props.materials.add()
-            new.ifc_definition_id = material.id()
+            # Assign name before assigning ifc_definition_id to avoid triggering IFC update.
             new.name = get_name(material)
+            new.ifc_definition_id = material.id()
             new.total_elements = len(ifcopenshell.util.element.get_elements_by_material(tool.Ifc.get(), material))
 
     @classmethod