diff --git a/cbctdes/rtl/cbctdes.vhd b/cbctdes/rtl/vhdl/cbctdes.vhd
similarity index 100%
rename from cbctdes/rtl/cbctdes.vhd
rename to cbctdes/rtl/vhdl/cbctdes.vhd
diff --git a/cbctdes/rtl/des.vhd b/cbctdes/rtl/vhdl/des.vhd
similarity index 100%
rename from cbctdes/rtl/des.vhd
rename to cbctdes/rtl/vhdl/des.vhd
diff --git a/cbctdes/rtl/des_pkg.vhd b/cbctdes/rtl/vhdl/des_pkg.vhd
similarity index 100%
rename from cbctdes/rtl/des_pkg.vhd
rename to cbctdes/rtl/vhdl/des_pkg.vhd
diff --git a/cbctdes/rtl/tdes.vhd b/cbctdes/rtl/vhdl/tdes.vhd
similarity index 100%
rename from cbctdes/rtl/tdes.vhd
rename to cbctdes/rtl/vhdl/tdes.vhd