diff --git a/tests/test_etag.py b/tests/test_etag.py
index a6e74dc8..ff64d391 100644
--- a/tests/test_etag.py
+++ b/tests/test_etag.py
@@ -227,7 +227,7 @@ def test_etag_check_etag_wrong_method_warning(
             assert not recwarn
         else:
             assert len(recwarn) == 1
-            assert recwarn[0].category == UserWarning
+            assert recwarn[0].category is UserWarning
             assert str(recwarn[0].message) == (
                 f"ETag cannot be checked on {method} request."
             )
@@ -250,7 +250,7 @@ def test_etag_verify_check_etag_warning(self, app, method, recwarn):
             blp._verify_check_etag()
             if method in ["PUT", "PATCH", "DELETE"]:
                 assert len(recwarn) == 1
-                assert recwarn[0].category == UserWarning
+                assert recwarn[0].category is UserWarning
                 assert str(recwarn[0].message) == (
                     f"ETag not checked in endpoint {f_request.endpoint} "
                     f"on {method} request."
@@ -345,7 +345,7 @@ def test_etag_set_etag_method_not_allowed_warning(
             assert not recwarn
         else:
             assert len(recwarn) == 1
-            assert recwarn[0].category == UserWarning
+            assert recwarn[0].category is UserWarning
             assert str(recwarn[0].message) == (
                 f"ETag cannot be set on {method} request."
             )
diff --git a/tests/test_pagination.py b/tests/test_pagination.py
index 455dfbed..3c445cf1 100644
--- a/tests/test_pagination.py
+++ b/tests/test_pagination.py
@@ -219,7 +219,7 @@ def func(pagination_parameters):
             assert not recwarn
         else:
             assert len(recwarn) == 1
-            assert recwarn[0].category == UserWarning
+            assert recwarn[0].category is UserWarning
             assert str(recwarn[0].message) == (
                 "item_count not set in endpoint test.func."
             )