diff --git a/examples/fluids/navierstokes.c b/examples/fluids/navierstokes.c
index e125c223d0..bafe7212ab 100644
--- a/examples/fluids/navierstokes.c
+++ b/examples/fluids/navierstokes.c
@@ -18,6 +18,7 @@
 //     ./navierstokes -ceed /cpu/self -problem density_current -degree 1
 //     ./navierstokes -ceed /gpu/cuda -problem advection -degree 1
 //
+//TESTARGS(name="Advection 2D, rotation, explicit, su, consistent mass") -ceed {ceed_resource} -test_type solver -problem advection -degree 3 -dm_plex_box_faces 2,2 -dm_plex_box_lower 0,0 -dm_plex_box_upper 125,125 -bc_wall 1,2,3,4 -wall_comps 4 -units_kilogram 1e-9 -rc 100. -ts_dt 1e-3 -ts_max_steps 10 -stab su -Ctaus 0.5 -mass_ksp_type cg -mass_pc_jacobi_type diagonal -compare_final_state_atol 1e-10 -compare_final_state_filename examples/fluids/tests-output/fluids-navierstokes-adv2d-rotation-explicit-stab-su-consistent-mass.bin
 //TESTARGS(name="Advection, skew") -ceed {ceed_resource} -test_type solver -options_file examples/fluids/advection.yaml -ts_max_steps 5 -wind_type translation -wind_translation -0.5547002,0.83205029,0 -advection_ic_type skew  -dm_plex_box_faces 2,1,1 -degree 2 -stab supg -stab_tau advdiff_shakib -Ctau_a 4 -ksp_type gmres -compare_final_state_atol 5e-10 -compare_final_state_filename examples/fluids/tests-output/fluids-navierstokes-adv-skew.bin
 //TESTARGS(name="Blasius, bc_slip") -ceed {ceed_resource} -test_type solver -options_file examples/fluids/blasius.yaml -ts_max_steps 5 -dm_plex_box_faces 3,20,1 -platemesh_nDelta 10 -platemesh_growth 1.2 -bc_outflow 5 -bc_slip 4 -compare_final_state_atol 2E-11 -compare_final_state_filename examples/fluids/tests-output/fluids-navierstokes-blasius-bc_slip.bin
 //TESTARGS(name="Blasius, SGS DataDriven Sequential") -ceed {ceed_resource} -options_file examples/fluids/tests-output/blasius_stgtest.yaml -sgs_model_type data_driven -sgs_model_dd_leakyrelu_alpha 0.3 -sgs_model_dd_parameter_dir examples/fluids/dd_sgs_data -ts_dt 2e-9 -state_var primitive -ksp_rtol 1e-12 -snes_rtol 1e-12 -stg_mean_only -stg_fluctuating_IC -test_type solver -compare_final_state_atol 1e-10 -compare_final_state_filename examples/fluids/tests-output/fluids-navierstokes-blasius-sgs-data-driven.bin -sgs_model_dd_use_fused false
diff --git a/examples/fluids/qfunctions/advection.h b/examples/fluids/qfunctions/advection.h
index bb8b205674..e4f4015537 100644
--- a/examples/fluids/qfunctions/advection.h
+++ b/examples/fluids/qfunctions/advection.h
@@ -391,7 +391,7 @@ CEED_QFUNCTION_HELPER void RHSFunction_AdvectionGeneric(void *ctx, CeedInt Q, co
           break;
         case STAB_SU:
         case STAB_SUPG:
-          grad_v[j][4][i] += wdetJ * TauS * strong_conv * uX[j];
+          grad_v[j][4][i] -= wdetJ * TauS * strong_conv * uX[j];
           break;
       }
   }
diff --git a/examples/fluids/tests-output/fluids-navierstokes-adv2d-rotation-explicit-stab-su-consistent-mass.bin b/examples/fluids/tests-output/fluids-navierstokes-adv2d-rotation-explicit-stab-su-consistent-mass.bin
new file mode 100644
index 0000000000..64b6150bb7
Binary files /dev/null and b/examples/fluids/tests-output/fluids-navierstokes-adv2d-rotation-explicit-stab-su-consistent-mass.bin differ