1 files changed, 5 insertions, 4 deletions
diff --git a/mammoth/images.py b/mammoth/images.py
index 9dba353..21b9288 100644
--- a/mammoth/images.py
+++ b/mammoth/images.py
@@ -5,12 +5,13 @@ from . import html
 
 def img_element(func):
     def convert_image(image):
-        attributes = func(image).copy()
+        attributes = {}
         if image.alt_text:
             attributes["alt"] = image.alt_text
-            
+        attributes.update(func(image))
+
         return [html.element("img", attributes)]
-    
+
     return convert_image
 
 # Undocumented, but retained for backwards-compatibility with 0.3.x
@@ -21,7 +22,7 @@ inline = img_element
 def data_uri(image):
     with image.open() as image_bytes:
         encoded_src = base64.b64encode(image_bytes.read()).decode("ascii")
-    
+
     return {
         "src": "data:{0};base64,{1}".format(image.content_type, encoded_src)
     }