diff --git a/vars/env.vars b/vars/env.vars
index 2599cb3..044c0d2 100644
--- a/vars/env.vars
+++ b/vars/env.vars
@@ -33,7 +33,7 @@
 	MAKEFLAGS_BUILD_EXTRA MAKEFLAGS_INSTALL MAKEFLAGS_INSTALL_EXTRA
 	NO_LOG_VARS SHA256SUM SLIBTOOL SUBDIR TARGET URL URL_TYPE URLS_GIT VERSION"};
 : ${CLEAR_ENV_VARS_EXCEPT:="ARG_VERBOSE ARG_VERBOSE2 ARG_VERBOSE3 DEFAULT_GITROOT_HEAD HOME PATH SHELL TERM TARBALL_SIGN_GPG_KEY USER"};
-: ${CLEAR_PREFIX_DIRS:="bin i686-nt32-midipix include lib lib64 libexec minipix native share tmp x86_64-nt64-midipix"};
+: ${CLEAR_PREFIX_DIRS:="bin i686-nt32-midipix doc include info lib lib64 libexec man minipix native sbin share tmp usr x86_64-nt64-midipix x86_64-w64-mingw32"};
 
 # Default flags
 : ${DEFAULT_BUILD_CPUS:=1};