diff --git a/rubygems-2.1.x-binary-extensions.patch b/rubygems-2.1.x-binary-extensions.patch
index 8cdb9d0..11601f3 100644
--- a/rubygems-2.1.x-binary-extensions.patch
+++ b/rubygems-2.1.x-binary-extensions.patch
@@ -74,6 +74,23 @@
      @base_dir      = nil
    end
  
+--- rubygems-2.1.11/lib/rubygems/commands/which_command.rb.binext	2013-11-13 08:24:55.000000000 +0900
++++ rubygems-2.1.11/lib/rubygems/commands/which_command.rb	2014-01-10 17:06:12.279125707 +0900
+@@ -82,7 +82,13 @@
+   end
+ 
+   def gem_paths(spec)
+-    spec.require_paths.collect { |d| File.join spec.full_gem_path, d }
++    ret = []
++    spec.require_paths.collect { |d| 
++      ret << File.join(spec.full_gem_path, d)
++    }
++    ret << File.join(spec.ext_dir, spec.require_paths.first) \
++        unless (spec.extensions.empty? || (spec.ext_dir == spec.full_gem_path))
++    ret
+   end
+ 
+   def usage # :nodoc:
 --- rubygems-2.1.11/lib/rubygems/defaults.rb.binext	2013-11-13 08:24:55.000000000 +0900
 +++ rubygems-2.1.11/lib/rubygems/defaults.rb	2013-12-13 14:22:17.079954405 +0900
 @@ -111,6 +111,17 @@
diff --git a/rubygems.spec b/rubygems.spec
index 1deeeec..6c83bf8 100644
--- a/rubygems.spec
+++ b/rubygems.spec
@@ -25,7 +25,7 @@
 Summary:	The Ruby standard for packaging ruby libraries
 Name:		rubygems
 Version:	2.1.11
-Release:	114%{?dist}
+Release:	115%{?dist}
 Group:		Development/Libraries
 License:	Ruby or MIT
 
@@ -268,6 +268,9 @@ ruby -Ilib %{SOURCE11}
 
 
 %changelog
+* Fri Jan 10 2014 Mamoru TASAKA <mtasaka@fedoraproject.org> - 2.1.11-115
+- Add extension directory also to WhichCommand::gem_paths (bug 1051169)
+
 * Fri Dec 13 2013 Mamoru TASAKA <mtasaka@fedoraproject.org> - 2.1.11-114
 - Add extension directory to contains_requirable_file (bug 1041391)