diff --git a/libmat2/harmless.py b/libmat2/harmless.py
index 42b6eda..7409784 100644
--- a/libmat2/harmless.py
+++ b/libmat2/harmless.py
@@ -5,7 +5,7 @@ from . import abstract
 
 class HarmlessParser(abstract.AbstractParser):
     """ This is the parser for filetypes that can not contain metadata. """
-    mimetypes = {'text/plain', 'image/x-ms-bmp'}
+    mimetypes = {'text/plain', 'image/x-ms-bmp', 'image/bmp'}
 
     def get_meta(self) -> Dict[str, Union[str, Dict]]:
         return dict()