diff --git a/compareECLFiles.cmake b/compareECLFiles.cmake
index 37dedb4ef..d28c4531e 100755
--- a/compareECLFiles.cmake
+++ b/compareECLFiles.cmake
@@ -220,6 +220,13 @@ add_test_compareECLFiles(CASENAME spe1_oilgas
                          REL_TOL ${coarse_rel_tol}
                          DIR spe1)
 
+add_test_compareECLFiles(CASENAME spe1_gaswater
+                         FILENAME SPE1CASE2_GASWATER
+                         SIMULATOR flow
+                         ABS_TOL ${abs_tol}
+                         REL_TOL ${coarse_rel_tol}
+                         DIR spe1)
+
 add_test_compareECLFiles(CASENAME spe1
                          FILENAME SPE1CASE1
                          SIMULATOR flow
@@ -1007,6 +1014,13 @@ if(MPI_FOUND)
                                        REL_TOL ${rel_tol_parallel}
                                        TEST_ARGS --linear-solver-reduction=1e-7 --tolerance-cnv=5e-6 --tolerance-mb=1e-8)
 
+  add_test_compare_parallel_simulation(CASENAME spe1_gaswater
+                                       FILENAME SPE1CASE2_GASWATER
+                                       SIMULATOR flow
+                                       ABS_TOL ${abs_tol_parallel}
+                                       REL_TOL ${rel_tol_parallel}
+                                       TEST_ARGS --linear-solver-reduction=1e-7 --tolerance-cnv=5e-6 --tolerance-mb=1e-8)
+
   add_test_compare_parallel_simulation(CASENAME spe9
                                        FILENAME SPE9_CP_SHORT
                                        SIMULATOR flow
diff --git a/tests/update_reference_data.sh b/tests/update_reference_data.sh
index 182b8e62a..027bd3c34 100755
--- a/tests/update_reference_data.sh
+++ b/tests/update_reference_data.sh
@@ -55,6 +55,7 @@ tests[spe1]="flow spe1 SPE1CASE1"
 tests[spe12]="flow spe1 SPE1CASE2"
 tests[spe1_2p]="flow spe1 SPE1CASE2_2P"
 tests[spe1_oilgas]="flow spe1 SPE1CASE2_OILGAS"
+tests[spe1_gaswater]="flow spe1 SPE1CASE2_GASWATER"
 tests[spe1_nowells]="flow spe1 SPE1CASE2_NOWELLS"
 tests[spe1_thermal]="flow spe1 SPE1CASE2_THERMAL"
 tests[spe1_thermal_onephase]="flow_onephase_energy spe1 SPE1CASE2_THERMAL_ONEPHASE"