diff --git a/lib/redmine/scm/adapters/mercurial_adapter.rb b/lib/redmine/scm/adapters/mercurial_adapter.rb
index a0f1db195..1f9153fab 100644
--- a/lib/redmine/scm/adapters/mercurial_adapter.rb
+++ b/lib/redmine/scm/adapters/mercurial_adapter.rb
@@ -120,8 +120,12 @@ module Redmine
         def summary
           return @summary if @summary 
           hg 'rhsummary' do |io|
+            output = io.read
+            if output.respond_to?(:force_encoding)
+              output.force_encoding('UTF-8')
+            end
             begin
-              @summary = ActiveSupport::XmlMini.parse(io.read)['rhsummary']
+              @summary = ActiveSupport::XmlMini.parse(output)['rhsummary']
             rescue
             end
           end
@@ -132,8 +136,12 @@ module Redmine
           p1 = scm_iconv(@path_encoding, 'UTF-8', path)
           manifest = hg('rhmanifest', '-r', CGI.escape(hgrev(identifier)),
                         CGI.escape(without_leading_slash(p1.to_s))) do |io|
+            output = io.read
+            if output.respond_to?(:force_encoding)
+              output.force_encoding('UTF-8')
+            end
             begin
-              ActiveSupport::XmlMini.parse(io.read)['rhmanifest']['repository']['manifest']
+              ActiveSupport::XmlMini.parse(output)['rhmanifest']['repository']['manifest']
             rescue
             end
           end
@@ -175,9 +183,13 @@ module Redmine
           hg_args << '--limit' << options[:limit] if options[:limit]
           hg_args << hgtarget(path) unless path.blank?
           log = hg(*hg_args) do |io|
+            output = io.read
+            if output.respond_to?(:force_encoding)
+              output.force_encoding('UTF-8')
+            end
             begin
               # Mercurial < 1.5 does not support footer template for '</log>'
-              ActiveSupport::XmlMini.parse("#{io.read}</log>")['log']
+              ActiveSupport::XmlMini.parse("#{output}</log>")['log']
             rescue
             end
           end
diff --git a/lib/redmine/scm/adapters/subversion_adapter.rb b/lib/redmine/scm/adapters/subversion_adapter.rb
index 1fad6e3fa..59f577e64 100644
--- a/lib/redmine/scm/adapters/subversion_adapter.rb
+++ b/lib/redmine/scm/adapters/subversion_adapter.rb
@@ -65,6 +65,9 @@ module Redmine
           info = nil
           shellout(cmd) do |io|
             output = io.read
+            if output.respond_to?(:force_encoding)
+              output.force_encoding('UTF-8')
+            end
             begin
               doc = ActiveSupport::XmlMini.parse(output)
               #root_url = doc.elements["info/entry/repository/root"].text          
@@ -94,6 +97,9 @@ module Redmine
           cmd << credentials_string
           shellout(cmd) do |io|
             output = io.read
+            if output.respond_to?(:force_encoding)
+              output.force_encoding('UTF-8')
+            end
             begin
               doc = ActiveSupport::XmlMini.parse(output)
               each_xml_element(doc['lists']['list'], 'entry') do |entry|
@@ -134,6 +140,9 @@ module Redmine
           properties = {}
           shellout(cmd) do |io|
             output = io.read
+            if output.respond_to?(:force_encoding)
+              output.force_encoding('UTF-8')
+            end
             begin
               doc = ActiveSupport::XmlMini.parse(output)
               each_xml_element(doc['properties']['target'], 'property') do |property|
@@ -158,6 +167,9 @@ module Redmine
           cmd << ' ' + target(path)
           shellout(cmd) do |io|
             output = io.read
+            if output.respond_to?(:force_encoding)
+              output.force_encoding('UTF-8')
+            end
             begin
               doc = ActiveSupport::XmlMini.parse(output)
               each_xml_element(doc['log'], 'logentry') do |logentry|