diff --git a/src/blenderbim/blenderbim/bim/ifc.py b/src/blenderbim/blenderbim/bim/ifc.py
index 312527beb4..8d31281804 100644
--- a/src/blenderbim/blenderbim/bim/ifc.py
+++ b/src/blenderbim/blenderbim/bim/ifc.py
@@ -163,8 +163,12 @@ class IfcStore:
         if not IfcStore.get_file():
             return
         for obj in bpy.data.objects:
+            if obj.library:
+                continue
             IfcStore.relink_object(obj)
         for obj in bpy.data.materials:
+            if obj.library:
+                continue
             IfcStore.relink_object(obj)
 
     @staticmethod
diff --git a/src/blenderbim/blenderbim/bim/operator.py b/src/blenderbim/blenderbim/bim/operator.py
index 42739c680e..69f46e5f34 100644
--- a/src/blenderbim/blenderbim/bim/operator.py
+++ b/src/blenderbim/blenderbim/bim/operator.py
@@ -670,6 +670,8 @@ class ReloadIfcFile(bpy.types.Operator, tool.Ifc.Operator):
         # STEP IDs may change, but we assume the GlobalID to be constant
         obj_map = {}
         for obj in bpy.data.objects:
+            if obj.library:
+                continue
             element = tool.Ifc.get_entity(obj)
             if element and hasattr(element, "GlobalId"):
                 obj_map[obj.name] = element.GlobalId
@@ -678,6 +680,8 @@ class ReloadIfcFile(bpy.types.Operator, tool.Ifc.Operator):
         tool.Ifc.set(new)
 
         for obj in bpy.data.objects:
+            if obj.library:
+                continue
             global_id = obj_map.get(obj.name)
             if global_id:
                 try:
diff --git a/src/blenderbim/blenderbim/tool/ifc.py b/src/blenderbim/blenderbim/tool/ifc.py
index a655b5ce1a..d17c819894 100644
--- a/src/blenderbim/blenderbim/tool/ifc.py
+++ b/src/blenderbim/blenderbim/tool/ifc.py
@@ -118,6 +118,9 @@ class Ifc(blenderbim.core.tool.Ifc):
             return
 
         for obj in bpy.data.objects:
+            if obj.library:
+                continue
+
             bpy.msgbus.clear_by_owner(obj)
 
             element = cls.get_entity(obj)
@@ -134,6 +137,9 @@ class Ifc(blenderbim.core.tool.Ifc):
             )
 
         for obj in bpy.data.materials:
+            if obj.library:
+                continue
+
             bpy.msgbus.clear_by_owner(obj)
 
             material = cls.get_entity(obj)