diff --git a/ProcessLib/HT/Tests.cmake b/ProcessLib/HT/Tests.cmake
index f5fcb32269e099efa3ce881cccc45abda8b28f02..92b663c3dede0c57a09bd6e3c69b59a0d07e80f1 100644
--- a/ProcessLib/HT/Tests.cmake
+++ b/ProcessLib/HT/Tests.cmake
@@ -204,7 +204,7 @@ AddTest(
     REQUIREMENTS NOT (OGS_USE_LIS OR OGS_USE_MPI)
     DIFF_DATA
     square_5500x5500.vtu ConstViscosityThermalConvectionStaggeredAdaptive_dt_pcs_1_ts_141_t_50000000000.000000.vtu T_ref T 1e-3  1.e-3
-    square_5500x5500.vtu ConstViscosityThermalConvectionStaggeredAdaptive_dt_pcs_1_ts_141_t_50000000000.000000.vtu p_ref p  1e-3  1.e-3
+    square_5500x5500.vtu ConstViscosityThermalConvectionStaggeredAdaptive_dt_pcs_1_ts_141_t_50000000000.000000.vtu p_ref p  1e-3  2.e-3
     square_5500x5500.vtu ConstViscosityThermalConvectionStaggeredAdaptive_dt_pcs_1_ts_141_t_50000000000.000000.vtu darcy_velocity_ref darcy_velocity  1e-3  1.e-3
     VIS ConstViscosityThermalConvectionStaggeredAdaptive_dt_pcs_1_ts_141_t_50000000000.000000.vtu
 )