diff --git a/unittest/force-styles/tests/kspace-pppm_tip4p.yaml b/unittest/force-styles/tests/kspace-pppm_tip4p.yaml
index ec70dd7d6b..83926fe39d 100644
--- a/unittest/force-styles/tests/kspace-pppm_tip4p.yaml
+++ b/unittest/force-styles/tests/kspace-pppm_tip4p.yaml
@@ -1,7 +1,7 @@
 ---
 lammps_version: 30 Jun 2020
 date_generated: Sat Jul  4 16:24:28 202
-epsilon: 1e-13
+epsilon: 2e-13
 prerequisites: ! |
   atom full
   pair tip4p/long