diff --git a/test/utils/test_kinematics.py b/test/utils/test_kinematics.py
index 80c8c2a99..c563ecf38 100644
--- a/test/utils/test_kinematics.py
+++ b/test/utils/test_kinematics.py
@@ -31,8 +31,8 @@ def test_p4(self):
                            125.0,  # charge
                            edm4hep.Vector3d(0, 0, 0),  # vertex
                            edm4hep.Vector3d(0, 0, 0),  # endpoint
-                           edm4hep.Vector3f(1.0, 2.0, 3.0),  # momentum
-                           edm4hep.Vector3f(0, 0, 0),  # momentumAtEndpoint
+                           edm4hep.Vector3d(1.0, 2.0, 3.0),  # momentum
+                           edm4hep.Vector3d(0, 0, 0),  # momentumAtEndpoint
                            edm4hep.Vector3f(0, 0, 0),  # spin
                            edm4hep.Vector2i(0, 0)  # colorFlow
                            )