diff --git a/plugins/markdown_preview/plugin.py b/plugins/markdown_preview/plugin.py
index 1dffb30..0c56caa 100644
--- a/plugins/markdown_preview/plugin.py
+++ b/plugins/markdown_preview/plugin.py
@@ -27,6 +27,7 @@ class Plugin(MarkdownTemplateMixin, PluginBase):
         self._GLADE_FILE        = f"{self.path}/markdown_preview.glade"
         
         self.is_preview_paused  = False
+        self.is_md_file         = False
 
 
     def run(self):
@@ -54,23 +55,25 @@ class Plugin(MarkdownTemplateMixin, PluginBase):
         self._event_system.subscribe("set_active_src_view", self._set_active_src_view)
         self._event_system.subscribe("buffer_changed", self._do_markdown_translate)
 
+    def _buffer_changed_first_load(self, buffer):
+        self._buffer = buffer
+
+        self._do_markdown_translate(buffer)
+
     def _set_active_src_view(self, source_view):
         self._active_src_view = source_view
         self._buffer          = self._active_src_view.get_buffer()
-    
+
+        self._do_markdown_translate(self._buffer)
+
     def _handle_settings(self, widget = None, eve = None):
         ...
 
-
-    def _buffer_changed_first_load(self, buffer):
-        self._buffer = buffer
-        self._do_markdown_translate(buffer)
-
     def _tggle_preview_updates(self, widget = None, eve = None):
         self.is_preview_paused = not self.is_preview_paused
         widget.set_active(self.is_preview_paused)
 
-        if notself.is_preview_paused:
+        if not self.is_preview_paused:
             self._do_markdown_translate(self._buffer)
 
     def _tggle_markdown_preview(self, widget = None, eve = None):
@@ -89,9 +92,12 @@ class Plugin(MarkdownTemplateMixin, PluginBase):
     def _do_markdown_translate(self, buffer):
         if self.is_preview_paused: return
 
+        self.is_markdown_check()
         is_visible = self._markdown_dialog.is_visible()
-        if not is_visible: return
+        if not is_visible or not self.is_md_file: return
+        self.render_markdown(buffer)
 
+    def render_markdown(self, buffer):
         start_iter = buffer.get_start_iter()
         end_iter   = buffer.get_end_iter()
         text       = buffer.get_text(start_iter, end_iter, include_hidden_chars = False)
@@ -99,4 +105,10 @@ class Plugin(MarkdownTemplateMixin, PluginBase):
 
         path       = self._active_src_view.get_current_filepath().get_parent().get_path()
         data       = self.wrap_html_to_body(html)
-        self._markdown_view.load_html(content = data, base_uri = f"file://{path}/")
\ No newline at end of file
+        self._markdown_view.load_html(content = data, base_uri = f"file://{path}/")
+    
+    def is_markdown_check(self):
+        self.is_md_file = self._active_src_view.get_filetype() == "markdown"
+        if not self.is_md_file:
+            data = self.wrap_html_to_body("<h1>Not a Markdown file...</h1>")
+            self._markdown_view.load_html(content = data, base_uri = None)
\ No newline at end of file