diff --git a/nmigen/test/test_fhdl_ast.py b/nmigen/test/test_hdl_ast.py
similarity index 100%
rename from nmigen/test/test_fhdl_ast.py
rename to nmigen/test/test_hdl_ast.py
diff --git a/nmigen/test/test_fhdl_cd.py b/nmigen/test/test_hdl_cd.py
similarity index 100%
rename from nmigen/test/test_fhdl_cd.py
rename to nmigen/test/test_hdl_cd.py
diff --git a/nmigen/test/test_fhdl_dsl.py b/nmigen/test/test_hdl_dsl.py
similarity index 100%
rename from nmigen/test/test_fhdl_dsl.py
rename to nmigen/test/test_hdl_dsl.py
diff --git a/nmigen/test/test_fhdl_ir.py b/nmigen/test/test_hdl_ir.py
similarity index 100%
rename from nmigen/test/test_fhdl_ir.py
rename to nmigen/test/test_hdl_ir.py
diff --git a/nmigen/test/test_fhdl_xfrm.py b/nmigen/test/test_hdl_xfrm.py
similarity index 100%
rename from nmigen/test/test_fhdl_xfrm.py
rename to nmigen/test/test_hdl_xfrm.py