diff --git a/conf/distro/include/tcmode-external-sourcery.inc b/conf/distro/include/tcmode-external-sourcery.inc
index dddbb6e..14f324c 100644
--- a/conf/distro/include/tcmode-external-sourcery.inc
+++ b/conf/distro/include/tcmode-external-sourcery.inc
@@ -213,9 +213,3 @@ def get_gcc_version_prefix(d):
 GCCVERSION ?= "${@get_gcc_version_prefix(d)}%"
 
 BUILDCFG_VARS += "CSL_VER_MAIN EXTERNAL_TOOLCHAIN"
-SDKGCCVERSION ?= "${GCCVERSION}"
-PREFERRED_VERSION_gcc-crosssdk ?= "${SDKGCCVERSION}"
-PREFERRED_VERSION_gcc-crosssdk-initial ?= "${SDKGCCVERSION}"
-PREFERRED_VERSION_gcc-crosssdk-intermediate ?= "${SDKGCCVERSION}"
-PREFERRED_VERSION_nativesdk-gcc-runtime ?= "${SDKGCCVERSION}"
-PREFERRED_VERSION_nativesdk-libgcc ?= "${SDKGCCVERSION}"