diff --git a/packages/k4fwcore/package.py b/packages/k4fwcore/package.py
index 59a70cd..bc74b14 100644
--- a/packages/k4fwcore/package.py
+++ b/packages/k4fwcore/package.py
@@ -6,6 +6,6 @@ class K4fwcore(BuiltinK4fwcore):
     # Allow podio@1: in CMakeLists.txt
     patch(
         "https://github.com/key4hep/k4FWCore/commit/d6e72d1fe24fe3e1c28d667a84e9f97e295d8976.patch?full_index=1",
-        sha256sum="55c77a1eb7b57d14e0901f178bdd630311bebdd75eb971d659e37657a90e5738",
+        sha256="55c77a1eb7b57d14e0901f178bdd630311bebdd75eb971d659e37657a90e5738",
         when="@1.0pre17:1.0pre19",
     )