diff --git a/tests/xTB/regtest-gfn0/ch2o_eper.inp b/tests/xTB/regtest-gfn0/ch2o_eper.inp
index 23f3215cca..144e2c9c91 100644
--- a/tests/xTB/regtest-gfn0/ch2o_eper.inp
+++ b/tests/xTB/regtest-gfn0/ch2o_eper.inp
@@ -7,7 +7,9 @@
 &DEBUG
   DEBUG_FORCES T
   DEBUG_STRESS_TENSOR F
-  DX 0.0001
+  DX 0.001
+  EPS_NO_ERROR_CHECK 1.E-4
+  MAX_RELATIVE_ERROR 0.30
   STOP_ON_MISMATCH T
 &END DEBUG
 
@@ -35,7 +37,7 @@
   &END DFT
   &SUBSYS
     &CELL
-      ABC 5.0 5.0 5.0
+      ABC 6.0 6.0 6.0
     &END CELL
     &COORD
       O     0.051368    0.000000    0.000000