diff --git a/toolchain/Toolchain.txt b/toolchain/Toolchain.txt
index 0166a520..9158b3f9 100644
--- a/toolchain/Toolchain.txt
+++ b/toolchain/Toolchain.txt
@@ -8,15 +8,10 @@ if (NOT DEFINED ENV{BANAN_SYSROOT})
 endif ()
 set(BANAN_SYSROOT $ENV{BANAN_SYSROOT})
 
-if (NOT DEFINED ENV{BANAN_SYSROOT_TAR})
-	message(FATAL_ERROR "environment variable BANAN_SYSROOT_TAR not defined")
+if (NOT DEFINED ENV{BANAN_TOOLCHAIN_PREFIX})
+       message(FATAL_ERROR "environment variable BANAN_TOOLCHAIN_PREFIX not defined")
 endif ()
-set(BANAN_SYSROOT_TAR $ENV{BANAN_SYSROOT_TAR})
-
-if (NOT DEFINED ENV{BANAN_ROOT_DIR})
-	message(FATAL_ERROR "environment variable BANAN_ROOT_DIR not defined")
-endif ()
-set(TOOLCHAIN_PREFIX $ENV{BANAN_ROOT_DIR}/toolchain/local)
+set(TOOLCHAIN_PREFIX $ENV{BANAN_TOOLCHAIN_PREFIX})
 
 set(CMAKE_SYSTEM_NAME banan-os)
 set(CMAKE_SYSTEM_PROCESSOR ${BANAN_ARCH})