diff --git a/configure.ac b/configure.ac
index 9660d3a6dd..884fe9a412 100644
--- a/configure.ac
+++ b/configure.ac
@@ -83,7 +83,7 @@ AC_ARG_WITH(baseruby,
 		AC_PATH_PROG([BASERUBY], [ruby], [false])
 	])
 AS_IF([test "$HAVE_BASERUBY" != no], [
-    RUBYOPT=- $BASERUBY --disable=gems "${tooldir}/missing-baseruby.bat" || HAVE_BASERUBY=no
+    RUBYOPT=- $BASERUBY --disable=gems -rerb -rfileutils -rtempfile "${tooldir}/missing-baseruby.bat" || HAVE_BASERUBY=no
 ])
 AS_IF([test "${HAVE_BASERUBY:=no}" != no], [
     AS_CASE(["$build_os"], [mingw*], [
diff --git a/tool/missing-baseruby.bat b/tool/missing-baseruby.bat
index 87a9857e06..fcc75ea902 100755
--- a/tool/missing-baseruby.bat
+++ b/tool/missing-baseruby.bat
@@ -7,6 +7,10 @@
     exit /b 1
 )||(
 :)"||(
+  # necessary libraries
+  require 'erb'
+  require 'fileutils'
+  require 'tempfile'
   s = %^#
 )
 : ; call() { local call=${1#:}; shift; $call "$@"; }