diff --git a/mrbgems/mruby-print/mrblib/print.rb b/mrbgems/mruby-print/mrblib/print.rb
index 503008eb1..9047f5e8f 100644
--- a/mrbgems/mruby-print/mrblib/print.rb
+++ b/mrbgems/mruby-print/mrblib/print.rb
@@ -28,6 +28,7 @@ module Kernel
       if s.kind_of?(Array)
         puts(*s)
       else
+        s = s.to_s
         print s
         print "\n" if (s[-1] != "\n")
       end