diff --git a/src/objectifier.py b/src/objectifier.py
index eadc4b4..02c8eca 100644
--- a/src/objectifier.py
+++ b/src/objectifier.py
@@ -116,7 +116,7 @@ def analyze_image(request: Request, image: UploadFile):
     base_url = re.sub(r'\/images\/?$', '/analyzed_images/', str(request.url))
     infile = incoming_dir / image.filename
     file_hash = hashlib.sha256()
-    with open(infile, "w") as f:
+    with open(infile, "wb") as f:
         chunk = image.file.read(buffer_size)
         while chunk:
             file_hash.update(chunk)