diff --git a/compareECLFiles.cmake b/compareECLFiles.cmake
index 592a98526..b7fad3cf0 100755
--- a/compareECLFiles.cmake
+++ b/compareECLFiles.cmake
@@ -332,6 +332,13 @@ add_test_compareECLFiles(CASENAME spe9group
                          ABS_TOL ${abs_tol}
                          REL_TOL ${rel_tol})
 
+add_test_compareECLFiles(CASENAME spe9group_resv
+                         FILENAME SPE9_CP_GROUP_RESV
+                         SIMULATOR flow
+                         ABS_TOL ${abs_tol}
+                         REL_TOL ${rel_tol}
+                         DIR spe9group)
+
 add_test_compareECLFiles(CASENAME msw_2d_h
                          FILENAME 2D_H__
                          SIMULATOR flow
diff --git a/tests/update_reference_data.sh b/tests/update_reference_data.sh
index f8eb059a8..0c32e1673 100755
--- a/tests/update_reference_data.sh
+++ b/tests/update_reference_data.sh
@@ -76,6 +76,7 @@ tests[spe3]="flow spe3 SPE3CASE1"
 tests[spe5]="flow spe5 SPE5CASE1"
 tests[spe5_co2eor]="flow spe5_co2eor SPE5CASE1_DYN"
 tests[spe9group]="flow spe9group SPE9_CP_GROUP"
+tests[spe9group_resv]="flow spe9group SPE9_CP_GROUP_RESV"
 tests[spe9]="flow spe9 SPE9_CP_SHORT"
 tests[wecon_wtest]="flow wecon_wtest 3D_WECON"
 tests[spe1_metric_vfp1]="flow vfpprod_spe1 SPE1CASE1_METRIC_VFP1"