diff --git a/amespahdbpythonsuite/fitted.py b/amespahdbpythonsuite/fitted.py
index ac71d8d..3652e3c 100644
--- a/amespahdbpythonsuite/fitted.py
+++ b/amespahdbpythonsuite/fitted.py
@@ -259,6 +259,8 @@ def plot(self, **keywords) -> None:
                 ptype = "composition"
             elif keywords.get("residual"):
                 ptype = "residual"
+            elif keywords.get("sizedistribution"):
+                ptype = "sizedistribution"
             else:
                 ptype = "fitted"