diff --git a/drf_openapi/entities.py b/drf_openapi/entities.py
index 70bba2d..02385d6 100644
--- a/drf_openapi/entities.py
+++ b/drf_openapi/entities.py
@@ -5,7 +5,7 @@
 import coreschema
 import uritemplate
 from coreapi import Link, Document, Field
-from coreapi.compat import force_text
+from django.utils.encoding import force_text
 from django.db import models
 from django.utils.functional import Promise
 from pkg_resources import parse_version
@@ -252,12 +252,12 @@ def get_path_fields(self, path, method, view):
                 except:
                     model_field = None
 
-                if model_field is not None and model_field.verbose_name:
+                if model_field is not None and hasattr(model_field, 'verbose_name'):
                     title = force_text(model_field.verbose_name)
 
-                if model_field is not None and model_field.help_text:
+                if model_field is not None and hasattr(model_field, 'help_text'):
                     description = force_text(model_field.help_text)
-                elif model_field is not None and model_field.primary_key:
+                elif model_field is not None and hasattr(model_field, 'primary_key'):
                     description = get_pk_description(model, model_field)
 
                 if hasattr(view, 'lookup_value_regex') and view.lookup_field == variable: