diff --git a/scrapy/pipelines/images.py b/scrapy/pipelines/images.py
index d3254bc20..48e8a7b83 100644
--- a/scrapy/pipelines/images.py
+++ b/scrapy/pipelines/images.py
@@ -135,7 +135,7 @@ class ImagesPipeline(FilesPipeline):
         if self._deprecated_convert_image is None:
             self._deprecated_convert_image = 'response_body' not in get_func_args(self.convert_image)
             if self._deprecated_convert_image:
-                warnings.warn('ImagesPipeline.convert_image() method overriden in a deprecated way, '
+                warnings.warn(f'{self.__class__.__name__}.convert_image() method overriden in a deprecated way, '
                               'overriden method does not accept response_body argument.',
                               category=ScrapyDeprecationWarning)
 
@@ -155,7 +155,7 @@ class ImagesPipeline(FilesPipeline):
 
     def convert_image(self, image, size=None, response_body=None):
         if response_body is None:
-            warnings.warn('ImagesPipeline.convert_image() method called in a deprecated way, '
+            warnings.warn(f'{self.__class__.__name__}.convert_image() method called in a deprecated way, '
                           'method called without response_body argument.',
                           category=ScrapyDeprecationWarning, stacklevel=2)
 
diff --git a/tests/test_pipeline_images.py b/tests/test_pipeline_images.py
index 380c775c4..0a294db80 100644
--- a/tests/test_pipeline_images.py
+++ b/tests/test_pipeline_images.py
@@ -162,7 +162,7 @@ class ImagesPipelineTestCase(unittest.TestCase):
                 self.assertEqual(orig_im.getcolors(), thumb_img.getcolors())
                 self.assertEqual(buf.getvalue(), thumb_buf.getvalue())
 
-                expected_warning_msg = ('ImagesPipeline.convert_image() method overriden in a deprecated way, '
+                expected_warning_msg = ('.convert_image() method overriden in a deprecated way, '
                                         'overriden method does not accept response_body argument.')
                 self.assertEqual(len([warning for warning in w if expected_warning_msg in str(warning.message)]), 1)
 
@@ -199,7 +199,7 @@ class ImagesPipelineTestCase(unittest.TestCase):
             self.assertEqual(converted.getcolors(), [(10000, (205, 230, 255))])
 
             # ensure that we recieved deprecation warnings
-            expected_warning_msg = 'ImagesPipeline.convert_image() method called in a deprecated way'
+            expected_warning_msg = '.convert_image() method called in a deprecated way'
             self.assertTrue(len([warning for warning in w if expected_warning_msg in str(warning.message)]) == 4)
 
     def test_convert_image_new(self):