diff --git a/hateheif.py b/hateheif.py
index 23dd1d7..20fcfe0 100644
--- a/hateheif.py
+++ b/hateheif.py
@@ -144,7 +144,7 @@ class HateHeifBot(Plugin):
         self.log.debug(f"Received message with an image with MIME: {content.info.mimetype}")
 
         # We work only on "image/heic" mime at the moment!
-        if content.info.mimetype != "image/heic":
+        if content.info.mimetype not in ("image/heic", "image/heif"):
             return
 
         if content.url:  # content.url exists. File is not encrypted.