diff --git a/test_regress/t/t_modport_expression_partsel.py b/test_regress/t/t_modport_expression_partsel.py
old mode 100644
new mode 100755
index f989a35fb..c6e56559a
--- a/test_regress/t/t_modport_expression_partsel.py
+++ b/test_regress/t/t_modport_expression_partsel.py
@@ -11,7 +11,7 @@ import vltest_bootstrap
 
 test.scenarios('simulator')
 
-test.compile()
+test.compile(verilator_flags2=["--binary"])
 
 test.execute()
 
diff --git a/test_regress/t/t_modport_expressions.py b/test_regress/t/t_modport_expressions.py
index f989a35fb..c6e56559a 100755
--- a/test_regress/t/t_modport_expressions.py
+++ b/test_regress/t/t_modport_expressions.py
@@ -11,7 +11,7 @@ import vltest_bootstrap
 
 test.scenarios('simulator')
 
-test.compile()
+test.compile(verilator_flags2=["--binary"])
 
 test.execute()