diff --git a/scripts/tests/scripts_regression_tests.py b/scripts/tests/scripts_regression_tests.py
index 036f8ae3047e..3c2cef10ae01 100755
--- a/scripts/tests/scripts_regression_tests.py
+++ b/scripts/tests/scripts_regression_tests.py
@@ -261,6 +261,7 @@ def test_a_createnewcase(self):
         run_cmd_assert_result(self, "./case.build", from_dir=testdir)
 
         with Case(testdir, read_only=True) as case:
+            case._compsetname = case.get_value("COMPSET")
             case.set_comp_classes(case.get_values("COMP_CLASSES"))
             primary = case._find_primary_component()
             self.assertEqual(primary, "drv", msg="primary component test expected drv but got %s"%primary)
@@ -294,7 +295,7 @@ def test_a_createnewcase(self):
             primary = case._find_primary_component()
             self.assertEqual(primary, "wilma", msg="primary component test expected wilma but got %s"%primary)
             # this is a "E" compset
-            case._compsetname.replace("XOCN","DOCN%SOM")
+            case._compsetname = case._compsetname.replace("XOCN","DOCN%SOM")
             primary = case._find_primary_component()
             self.assertEqual(primary, "allactive", msg="primary component test expected allactive but got %s"%primary)
             # finally a "B" compset