diff --git a/easypy/humanize.py b/easypy/humanize.py
index c7ea279..d7f6be3 100644
--- a/easypy/humanize.py
+++ b/easypy/humanize.py
@@ -614,7 +614,13 @@ def ipython_fields_repr(name, field_items, p, cycle):
 
 def ipython_mapping_repr(mapping, p, cycle):
     """Used by IPython. add to any mapping class as '_repr_pretty_'"""
-    ipython_fields_repr(mapping.__class__.__name__, sorted(mapping.items()), p, cycle)
+    try:
+        mapping_items = sorted(mapping.items())
+    except TypeError:
+        # some objcets do not support sorting
+        mapping_items = list(mapping.items())
+
+    ipython_fields_repr(mapping.__class__.__name__, mapping_items, p, cycle)
 
 
 BAR_SEQUENCE = ' ▏▎▍▌▋▊▉██'