diff --git a/test_regress/t/t_concatenate_casts.py b/test_regress/t/t_concat_casts.py
similarity index 100%
rename from test_regress/t/t_concatenate_casts.py
rename to test_regress/t/t_concat_casts.py
diff --git a/test_regress/t/t_concatenate_casts.v b/test_regress/t/t_concat_casts.v
similarity index 100%
rename from test_regress/t/t_concatenate_casts.v
rename to test_regress/t/t_concat_casts.v