diff --git a/markdownextradata/plugin.py b/markdownextradata/plugin.py
index 25bca2c..3b52d72 100644
--- a/markdownextradata/plugin.py
+++ b/markdownextradata/plugin.py
@@ -101,7 +101,11 @@ def on_page_markdown(self, markdown, page, **kwargs):
     # Initialize this mkdocs config and Jinja2 env
     def on_config(self, mkdocsConfig, **kwargs):
         jinja_options = self.config[self.JINJA_OPTIONS]
-        self.env = jinja2.Environment(undefined=jinja2.DebugUndefined, **jinja_options)
+        self.env = jinja2.Environment(
+            undefined=jinja2.DebugUndefined,
+            loader=jinja2.FileSystemLoader(mkdocsConfig["docs_dir"]),
+            **jinja_options
+        )
         self.mkdocsConfig = mkdocsConfig
 
     # Apply Jinja2 substitution to specified string