diff --git a/python/internal_tags.py b/python/internal_tags.py
index 8d3108d7..01941cff 100644
--- a/python/internal_tags.py
+++ b/python/internal_tags.py
@@ -18,7 +18,7 @@ class InternalTag(sdk.python.entities.Entity):
     id = Property(int)
     name = Property(str)
     # colour is in RRGGBB format.
-    colour = Property(int)
+    colour = Property(str)
     description = Property(str)
 
     companies = Property(Company, backref="internal_tags")