diff --git a/package/ruby/ruby.mk b/package/ruby/ruby.mk
index 297e9024f1..384cc88d55 100644
--- a/package/ruby/ruby.mk
+++ b/package/ruby/ruby.mk
@@ -14,7 +14,8 @@ RUBY_MAKE_ENV = $(TARGET_MAKE_ENV)
 RUBY_MAKE = $(MAKE1)
 RUBY_CONF_OPT = --disable-install-doc --disable-rpath
 HOST_RUBY_CONF_OPT = --disable-install-doc \
-	--with-out-ext=curses,openssl,readline
+	--with-out-ext=curses,openssl,readline \
+	--without-gmp
 RUBY_LICENSE = Ruby or BSD-2c, BSD-3c, others
 RUBY_LICENSE_FILES = LEGAL COPYING BSDL