diff --git a/modules/preprocessing.py b/modules/preprocessing.py
index 88f71976e322654d323925f8d3d8b9eb6dd96696..5f97a38cdb50ebbb7a35866b9443d2fbc928764c 100644
--- a/modules/preprocessing.py
+++ b/modules/preprocessing.py
@@ -31,7 +31,7 @@ def _add_flavors(definitions):
             if "memory" not in host:
                 host["memory"] = FLAVORS[host["flavor"]]["memory"]
             if "cpus" not in host:
-                host["memory"] = FLAVORS[host["flavor"]]["cpus"]
+                host["memory"] = FLAVORS[host["flavor"]]["cores"]
             host.pop("flavor")