diff --git a/dist/tools/buildsystem_sanity_check/check.sh b/dist/tools/buildsystem_sanity_check/check.sh
index 9974e3470a..5ef5f01fac 100755
--- a/dist/tools/buildsystem_sanity_check/check.sh
+++ b/dist/tools/buildsystem_sanity_check/check.sh
@@ -107,6 +107,7 @@ UNEXPORTED_VARIABLES+=('FLASH_TARGET_TYPE')
 UNEXPORTED_VARIABLES+=('PYOCD_ADAPTER_INIT')
 UNEXPORTED_VARIABLES+=('JLINK_DEVICE' 'JLINK_IF')
 UNEXPORTED_VARIABLES+=('JLINK_PRE_FLASH' 'JLINK_RESET_FILE')
+UNEXPORTED_VARIABLES+=('GIT_CACHE' 'GIT_CACHE_DIR')
 
 EXPORTED_VARIABLES_ONLY_IN_VARS=()
 EXPORTED_VARIABLES_ONLY_IN_VARS+=('APPDEPS')