diff --git a/scripts/build/companion_libs/350-newlib_nano.sh b/scripts/build/companion_libs/350-newlib_nano.sh
index 28992c0e..4cbfd71b 100644
--- a/scripts/build/companion_libs/350-newlib_nano.sh
+++ b/scripts/build/companion_libs/350-newlib_nano.sh
@@ -199,13 +199,13 @@ ENABLE_TARGET_OPTSPACE:target-optspace
 %rename cc1plus	newlib_nano_cc1plus
 
 *cpp:
--isystem ${CT_PREFIX_DIR}/newlib-nano/${CT_TARGET}/include %(newlib_nano_cpp)
+-isystem %:getenv(GCC_EXEC_PREFIX ../../newlib-nano/${CT_TARGET}/include) %(newlib_nano_cpp)
 
 *cc1plus:
--idirafter ${CT_PREFIX_DIR}/newlib-nano/${CT_TARGET}/include %(newlib_nano_cc1plus)  
+-idirafter %:getenv(GCC_EXEC_PREFIX ../../newlib-nano/${CT_TARGET}/include) %(newlib_nano_cc1plus)
 
 *link:
--L${CT_PREFIX_DIR}/newlib-nano/${CT_TARGET}/lib/%M -L${CT_PREFIX_DIR}/newlib-nano/${CT_TARGET}/lib
+-L%:getenv(GCC_EXEC_PREFIX ../../newlib-nano/${CT_TARGET}/lib/%M) -L%:getenv(GCC_EXEC_PREFIX ../../newlib-nano/${CT_TARGET}/lib)
 
 EOF