diff --git a/test_regress/t/t_trace_vif_class_clk.py b/test_regress/t/t_trace_vif_class_clk.py
old mode 100644
new mode 100755
diff --git a/test_regress/t/t_trace_vif_class_clk_multi.py b/test_regress/t/t_trace_vif_class_clk_multi.py
old mode 100644
new mode 100755