@@ -1,6 +1,9 @@
 #! /usr/bin/env bash
+
+# Clean variables which will interfere with the build
+unset MAKEFLAGS
 
 # Determine appropriate mode
 mode="build"
 case "$1" in
 	clean|distclean|build|retry)
@@ -8,11 +11,11 @@
 		shift
 		;;
 esac
 
 # Determine which Tcl version to build
-TCLVERS="8.6.1"
+TCLVERS="8.6.2"
 if echo "$1" | grep '^[0-9][0-9]*\.' >/dev/null || echo "$1" | egrep '^(cvs|fossil)_' >/dev/null; then
 	TCLVERS="$1"
 
 	shift
 fi