diff --git a/CMakeLists.txt b/CMakeLists.txt
index c386da7..750c9e0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -84,15 +84,8 @@ elseif(CONFIG_PICOTTS_LANGUAGE_IT_IT)
   set(PICOTTS_SG_SRC "it-IT_cm0_sg.bin")
 endif()
 
-
-if (UNIX)
-  add_custom_command(OUTPUT ${PICOTTS_TA_BIN} COMMAND cp ${PICOTTS_LANG_DIR}/${PICOTTS_TA_SRC} ${PICOTTS_TA_BIN_PATH})
-  add_custom_command(OUTPUT ${PICOTTS_SG_BIN} COMMAND cp ${PICOTTS_LANG_DIR}/${PICOTTS_SG_SRC} ${PICOTTS_SG_BIN_PATH})
-else()
-  add_custom_command(OUTPUT ${PICOTTS_TA_BIN} COMMAND ${CMAKE_COMMAND} -E copy ${PICOTTS_LANG_DIR}/${PICOTTS_TA_SRC} ${PICOTTS_TA_BIN_PATH})
-  add_custom_command(OUTPUT ${PICOTTS_SG_BIN} COMMAND ${CMAKE_COMMAND} -E copy ${PICOTTS_LANG_DIR}/${PICOTTS_SG_SRC} ${PICOTTS_SG_BIN_PATH})
-endif()
-
+add_custom_command(OUTPUT ${PICOTTS_TA_BIN} COMMAND ${CMAKE_COMMAND} -E copy ${PICOTTS_LANG_DIR}/${PICOTTS_TA_SRC} ${PICOTTS_TA_BIN_PATH})
+add_custom_command(OUTPUT ${PICOTTS_SG_BIN} COMMAND ${CMAKE_COMMAND} -E copy ${PICOTTS_LANG_DIR}/${PICOTTS_SG_SRC} ${PICOTTS_SG_BIN_PATH})
 
 add_custom_target(picotts_ta_bin_gen DEPENDS ${PICOTTS_TA_BIN_PATH})
 add_custom_target(picotts_sg_bin_gen DEPENDS ${PICOTTS_SG_BIN_PATH})