diff --git a/qcfractal/interface/collections/dataset.py b/qcfractal/interface/collections/dataset.py
index 677ccf229..7fb5982c6 100644
--- a/qcfractal/interface/collections/dataset.py
+++ b/qcfractal/interface/collections/dataset.py
@@ -1315,7 +1315,7 @@ def add_keywords(self, alias: str, program: str, keyword: "KeywordSet", default:
             self.data.alias_keywords[program] = {}
 
         if alias in self.data.alias_keywords[program]:
-            raise KeyError("Alias '{}' already set for program {}.".format(alias, keyword.program))
+            raise KeyError("Alias '{}' already set for program {}.".format(alias, program))
 
         self._new_keywords[(program, alias)] = keyword