diff --git a/src/aaf2/dictionary.py b/src/aaf2/dictionary.py
index 2655eb5..7e28a69 100644
--- a/src/aaf2/dictionary.py
+++ b/src/aaf2/dictionary.py
@@ -13,6 +13,7 @@
 from .utils import register_class
 
 def short_name(name):
+    name = name.replace(" ", "")
     for s in ('DataDef_', 'ContainerDef_'):
         name = name.replace(s, "")
     return name