diff --git a/unittest/force-styles/tests/atomic-pair-reax_c.yaml b/unittest/force-styles/tests/atomic-pair-reax_c.yaml
index b88eb7235b..a0dabff323 100644
--- a/unittest/force-styles/tests/atomic-pair-reax_c.yaml
+++ b/unittest/force-styles/tests/atomic-pair-reax_c.yaml
@@ -1,7 +1,7 @@
 ---
 lammps_version: 24 Aug 2020
 date_generated: Tue Sep 15 09:44:24 202
-epsilon: 2.5e-11
+epsilon: 5e-11
 prerequisites: ! |
   pair reax/c
   fix qeq/reax