diff --git a/index.html b/index.html
index d5bb0fd2..e75f1f01 100644
--- a/index.html
+++ b/index.html
@@ -386,7 +386,7 @@ exit</pre>
     use a white-list approach:
     </p>
     <pre>unset `env | \
-    grep -v '^HOME=\|^LANG=\|^PATH=\|PKG_CONFIG\|^PS1=\|^TERM=' | \
+    grep -v '^EDITOR=\|^HOME=\|^LANG=\|^PATH=\|PKG_CONFIG\|^PS1=\|^TERM=' | \
     sed -n 's,\(.*\)=.*$,\1,p' | tr '\n' ' '`</pre>
 
     <p>
diff --git a/tools/mxe-activate b/tools/mxe-activate
index 2b54732b..2ef23988 100644
--- a/tools/mxe-activate
+++ b/tools/mxe-activate
@@ -6,7 +6,7 @@ MXE_TARGET_LIST="`grep 'MXE_TARGET_LIST.*:=' Makefile | $SED -n 's,^.*:= \(.*\)$
 
 alias mxe='$MAKE -C $MXE_DIR --no-print-directory'
 
-unset `env | grep -v '^HOME=\|^LANG=\|MXE\|^PATH=\|^PS1=\|^TERM=' | $SED -n 's,\(.*\)=.*$,\1,p' | tr '\n' ' '`
+unset `env | grep -v '^EDITOR=\|^HOME=\|^LANG=\|MXE\|^PATH=\|^PS1=\|^TERM=' | $SED -n 's,\(.*\)=.*$,\1,p' | tr '\n' ' '`
 
 _mxe()
 {