diff --git a/test_regress/t/t_optm_if_array.py b/test_regress/t/t_opt_if_array.py
similarity index 100%
rename from test_regress/t/t_optm_if_array.py
rename to test_regress/t/t_opt_if_array.py
diff --git a/test_regress/t/t_optm_if_array.v b/test_regress/t/t_opt_if_array.v
similarity index 100%
rename from test_regress/t/t_optm_if_array.v
rename to test_regress/t/t_opt_if_array.v
diff --git a/test_regress/t/t_optm_redor.py b/test_regress/t/t_opt_redor.py
similarity index 100%
rename from test_regress/t/t_optm_redor.py
rename to test_regress/t/t_opt_redor.py
diff --git a/test_regress/t/t_optm_redor.v b/test_regress/t/t_opt_redor.v
similarity index 100%
rename from test_regress/t/t_optm_redor.v
rename to test_regress/t/t_opt_redor.v