diff --git a/tests/contrib.data_sources.interlis_2_3/sources/test_hook_methods.py b/tests/contrib.data_sources.interlis_2_3/sources/test_hook_methods.py
index 553df527f5..a68e874310 100644
--- a/tests/contrib.data_sources.interlis_2_3/sources/test_hook_methods.py
+++ b/tests/contrib.data_sources.interlis_2_3/sources/test_hook_methods.py
@@ -185,50 +185,3 @@ def query(self, term):
 
     yield Session
 
-
-def test_get_symbol_binary_content(theme_config, one_result_binary_session, png_binary):
-    with patch(
-            'pyramid_oereb.core.adapter.DatabaseAdapter.get_session',
-            return_value=one_result_binary_session()):
-        body, content_type = get_symbol({'identifier': "1"}, theme_config)
-        assert content_type == 'image/png'
-        assert body == b64.decode(binascii.b2a_base64(png_binary).decode('ascii'))
-
-
-def test_get_symbol_no_symbol_content(theme_config, one_result_no_symbol_session):
-    with patch(
-            'pyramid_oereb.core.adapter.DatabaseAdapter.get_session',
-            return_value=one_result_no_symbol_session()):
-        with pytest.raises(HTTPServerError):
-            get_symbol({'identifier': "1"}, theme_config)
-
-
-def test_get_symbol_wrong_param(theme_config, one_result_no_symbol_session):
-    with patch(
-            'pyramid_oereb.core.adapter.DatabaseAdapter.get_session',
-            return_value=one_result_no_symbol_session()):
-        with pytest.raises(HTTPServerError):
-            get_symbol({'identif': "1"}, theme_config)
-
-
-def test_get_symbol_no_legend_entry(theme_config, no_result_session):
-    with patch(
-            'pyramid_oereb.core.adapter.DatabaseAdapter.get_session',
-            return_value=no_result_session()):
-        with pytest.raises(HTTPNotFound):
-            get_symbol({'identifier': "2"}, theme_config)
-
-
-def test_get_symbol_wrong_content(theme_config, one_result_wrong_content_session):
-    with patch('pyramid_oereb.core.adapter.DatabaseAdapter.get_session',
-               return_value=one_result_wrong_content_session()):
-        with pytest.raises(HTTPServerError):
-            get_symbol({'identifier': "1"}, theme_config)
-
-
-def test_get_symbol_b64_content(theme_config, one_result_b64_session, png_binary):
-    with patch('pyramid_oereb.core.adapter.DatabaseAdapter.get_session',
-               return_value=one_result_b64_session()):
-        body, content_type = get_symbol({'identifier': "1"}, theme_config)
-        assert content_type == 'image/png'
-        assert body == b64.decode(binascii.b2a_base64(png_binary).decode('ascii'))