diff --git a/config/plugins/visualizations/common/templates/script_entry_point.mako b/config/plugins/visualizations/common/templates/script_entry_point.mako
index 677be72b02b5..d5a9946f9cf4 100644
--- a/config/plugins/visualizations/common/templates/script_entry_point.mako
+++ b/config/plugins/visualizations/common/templates/script_entry_point.mako
@@ -30,5 +30,5 @@
     ## Add script tag
     <% script_src = script_attributes.get("src") %>
     <% script_type = script_attributes.get("type") or "module" %>
-    <script type="${script_type}" src=${script_src}></script>
+    <script type="${script_type}" src="${script_src}"></script>
 </%def>
diff --git a/lib/galaxy/app_unittest_utils/galaxy_mock.py b/lib/galaxy/app_unittest_utils/galaxy_mock.py
index 95715c042543..47c44bd19384 100644
--- a/lib/galaxy/app_unittest_utils/galaxy_mock.py
+++ b/lib/galaxy/app_unittest_utils/galaxy_mock.py
@@ -430,8 +430,14 @@ def remove(self):
 
 
 class MockTemplateHelpers:
-    def js(*js_files):
+    def css(*css_files):
         pass
 
-    def css(*css_files):
+    def dumps(*kwargs):
+        return {}
+
+    def js(*js_files):
         pass
+
+    def url_for(*kwargs):
+        return "/"
diff --git a/test/unit/app/visualizations/plugins/test_VisualizationsRegistry.py b/test/unit/app/visualizations/plugins/test_VisualizationsRegistry.py
index 1c7f9707f047..7a95bf980589 100644
--- a/test/unit/app/visualizations/plugins/test_VisualizationsRegistry.py
+++ b/test/unit/app/visualizations/plugins/test_VisualizationsRegistry.py
@@ -15,7 +15,7 @@
 
 glx_dir = galaxy_directory()
 template_cache_dir = os.path.join(glx_dir, "database", "compiled_templates")
-addtional_templates_dir = os.path.join(glx_dir, "config", "plugins", "visualizations", "common", "templates")
+additional_templates_dir = os.path.join(glx_dir, "config", "plugins", "visualizations", "common", "templates")
 vis_reg_path = "config/plugins/visualizations"
 
 config1 = """\
@@ -144,7 +144,7 @@ def test_script_entry(self):
                     <model_class>HistoryDatasetAssociation</model_class>
                 </data_source>
             </data_sources>
-            <entry_point entry_point_type="script" data-main="one" src="bler"></entry_point>
+            <entry_point entry_point_type="script" container="mycontainer" src="bler"></entry_point>
         </visualization>
         """
         )
@@ -167,11 +167,11 @@ def test_script_entry(self):
         assert script_entry.serves_templates
 
         trans = galaxy_mock.MockTrans()
-        script_entry._set_up_template_plugin(mock_app_dir.root_path, [addtional_templates_dir])
-        response = script_entry._render({}, trans=trans, embedded=True)
+        script_entry._set_up_template_plugin(mock_app_dir.root_path, [additional_templates_dir])
+        response = script_entry.render(trans=trans, embedded=True)
         assert 'src="bler"' in response
         assert 'type="text/javascript"' in response
-        assert 'data-main="one"' in response
+        assert 'id="mycontainer"' in response
         mock_app_dir.remove()