diff --git a/test_regress/t/t_timing_clkgen.pl b/test_regress/t/t_timing_clkgen1.pl
similarity index 100%
rename from test_regress/t/t_timing_clkgen.pl
rename to test_regress/t/t_timing_clkgen1.pl
diff --git a/test_regress/t/t_timing_clkgen.v b/test_regress/t/t_timing_clkgen1.v
similarity index 100%
rename from test_regress/t/t_timing_clkgen.v
rename to test_regress/t/t_timing_clkgen1.v