diff --git a/recipes/compile/ruby-2.3.4/0005-utf-8-default-encoding.patch b/recipes/compile/ruby-2.3.4/0005-utf-8-default-encoding.patch
deleted file mode 100644
index 4bf795057..000000000
--- a/recipes/compile/ruby-2.3.4/0005-utf-8-default-encoding.patch
+++ /dev/null
@@ -1,13 +0,0 @@
-diff --git a/ruby.c b/ruby.c
-index 3f89bb4..a46aea3 100644
---- a/ruby.c
-+++ b/ruby.c
-@@ -1553,7 +1553,7 @@ process_options(int argc, char **argv, ruby_cmdline_options_t *opt)
- 	enc = rb_enc_from_index(opt->ext.enc.index);
-     }
-     else {
--	enc = lenc;
-+	enc = rb_utf8_encoding();
-     }
-     rb_enc_set_default_external(rb_enc_from_encoding(enc));
-     if (opt->intern.enc.index >= 0) {
diff --git a/recipes/compile/ruby-2.3.4/PKGBUILD.erb b/recipes/compile/ruby-2.3.4/PKGBUILD.erb
index fbff646ff..d6030a489 100644
--- a/recipes/compile/ruby-2.3.4/PKGBUILD.erb
+++ b/recipes/compile/ruby-2.3.4/PKGBUILD.erb
@@ -20,7 +20,6 @@ source=("https://cache.ruby-lang.org/pub/ruby/${pkgver%.*}/${_realname}-${pkgver
         0002-use-gnu-printf.patch
         0003-fix-check-types.patch
         0004-exclude-changelog-from-rdoc.patch
-        0005-utf-8-default-encoding.patch
         0006-fix-conversion-warning-win32-powl.patch
         0007-rbinstall-destdir.patch
         ruby.ico
@@ -33,7 +32,6 @@ sha256sums=('cd9808bb53824d6edb58beaadd3906cb23b987438ce75ab7bb279b2229930e2f'
             '578bd0830fe96efc7656c732ec46b0658fc436a7a30d8945cf3b8240797809f0'
             '846d73ad389249c54ff4e009ad2fd4cdbc46714fce25c724bc706b3ec2f2fe3a'
             '389236bdca5f283adde9b4b56febcfc25e228716e06a0edc21ea8fd7f27b75fa'
-            '76159e9fcefba7220e7b22fc1825714d5b734e1613eda53ad9fcc66c04f33f78'
             'e7f83bc6e3b7ddadb5e3b14aa7d3a4e30eb97aea02df38796ca78714ad20e9b7'
             '02382ec3b9e42d7dbb58edad3e41c361d98871711bb2f0320082c2acc6a82e2e'
             '6c80ba2ca49840e387a08b7fedc6e7acd298ac2ec853155209efb2af20397b22'
@@ -45,7 +43,6 @@ prepare() {
   patch -p1 -i ${srcdir}/0002-use-gnu-printf.patch
   patch -p1 -i ${srcdir}/0003-fix-check-types.patch
   patch -p1 -i ${srcdir}/0004-exclude-changelog-from-rdoc.patch
-  patch -p1 -i ${srcdir}/0005-utf-8-default-encoding.patch
   patch -p1 -i ${srcdir}/0006-fix-conversion-warning-win32-powl.patch
   patch -p1 -i ${srcdir}/0007-rbinstall-destdir.patch
 
diff --git a/recipes/compile/ruby-2.4.1/0005-utf-8-default-encoding.patch b/recipes/compile/ruby-2.4.1/0005-utf-8-default-encoding.patch
deleted file mode 100644
index 9a05095eb..000000000
--- a/recipes/compile/ruby-2.4.1/0005-utf-8-default-encoding.patch
+++ /dev/null
@@ -1,22 +0,0 @@
-diff --git a/ruby.c b/ruby.c
-index 3f89bb4..a46aea3 100644
---- a/ruby.c
-+++ b/ruby.c
-@@ -1553,7 +1553,7 @@ process_options(int argc, char **argv, ruby_cmdline_options_t *opt)
- 	enc = rb_enc_from_index(opt->ext.enc.index);
-     }
-     else {
--	enc = lenc;
-+	enc = rb_utf8_encoding();
-     }
-     rb_enc_set_default_external(rb_enc_from_encoding(enc));
-     if (opt->intern.enc.index >= 0) {
-@@ -1659,7 +1659,7 @@ process_options(int argc, char **argv, ruby_cmdline_options_t *opt)
- 	enc = rb_enc_from_index(opt->ext.enc.index);
-     }
-     else {
--	enc = lenc;
-+	enc = rb_utf8_encoding();
-     }
-     rb_enc_set_default_external(rb_enc_from_encoding(enc));
-     if (opt->intern.enc.index >= 0) {
diff --git a/recipes/compile/ruby-2.4.1/PKGBUILD.erb b/recipes/compile/ruby-2.4.1/PKGBUILD.erb
index a9ce35a7a..d2af08ab3 100644
--- a/recipes/compile/ruby-2.4.1/PKGBUILD.erb
+++ b/recipes/compile/ruby-2.4.1/PKGBUILD.erb
@@ -18,7 +18,6 @@ options=('staticlibs' 'strip')
 source=("https://cache.ruby-lang.org/pub/ruby/${pkgver%.*}/${_realname}-${pkgver}.tar.bz2"
         0002-use-gnu-printf.patch
         0004-exclude-changelog-from-rdoc.patch
-        0005-utf-8-default-encoding.patch
         0006-fix-conversion-warning-win32-powl.patch
         ruby.ico
         rubyw.ico)
@@ -28,7 +27,6 @@ source=("https://cache.ruby-lang.org/pub/ruby/${pkgver%.*}/${_realname}-${pkgver
 sha256sums=('ccfb2d0a61e2a9c374d51e099b0d833b09241ee78fc17e1fe38e3b282160237c'
             '578bd0830fe96efc7656c732ec46b0658fc436a7a30d8945cf3b8240797809f0'
             '389236bdca5f283adde9b4b56febcfc25e228716e06a0edc21ea8fd7f27b75fa'
-            '339538b8b06feaf54de525dcae3c11ee548a1fb97fbe0ad319019027d6d19044'
             'e7f83bc6e3b7ddadb5e3b14aa7d3a4e30eb97aea02df38796ca78714ad20e9b7'
             '6c80ba2ca49840e387a08b7fedc6e7acd298ac2ec853155209efb2af20397b22'
             'c30fb04ac0e88ba634daaa811a81ea5a75027646617b895acd14df9518a4a55a')
@@ -37,7 +35,6 @@ prepare() {
   cd ${srcdir}/${_realname}-${pkgver}
   patch -p1 -i ${srcdir}/0002-use-gnu-printf.patch
   patch -p1 -i ${srcdir}/0004-exclude-changelog-from-rdoc.patch
-  patch -p1 -i ${srcdir}/0005-utf-8-default-encoding.patch
   patch -p1 -i ${srcdir}/0006-fix-conversion-warning-win32-powl.patch
 
   autoreconf -fi
diff --git a/test/test_encoding.rb b/test/test_encoding.rb
index 2fcdb0b49..5ef6a715e 100644
--- a/test/test_encoding.rb
+++ b/test/test_encoding.rb
@@ -2,7 +2,7 @@
 
 class TestEncoding < Minitest::Test
   def test_default_external
-    assert_equal Encoding::UTF_8, Encoding.default_external
+    assert_equal Encoding.find("locale"), Encoding.default_external
   end
 
   def test_default_internal
@@ -10,7 +10,7 @@ def test_default_internal
   end
 
   def test_default_external_file_read
-    content = File.read(__FILE__)
+    content = File.read(__FILE__, encoding: __ENCODING__)
     assert_equal Encoding::UTF_8, content.encoding
     assert_match(/ÄöüßЖ/, content)
   end