diff --git a/lib/redmine/export/pdf/issues_pdf_helper.rb b/lib/redmine/export/pdf/issues_pdf_helper.rb
index 85330e9cb..834cd6db8 100644
--- a/lib/redmine/export/pdf/issues_pdf_helper.rb
+++ b/lib/redmine/export/pdf/issues_pdf_helper.rb
@@ -21,6 +21,8 @@ module Redmine
   module Export
     module PDF
       module IssuesPdfHelper
+        include ActionView::Helpers::NumberHelper
+
         # Returns a PDF string of a single issue
         def issue_to_pdf(issue, assoc={})
           pdf = ITCPDF.new(current_language)
@@ -406,7 +408,7 @@ module Redmine
                 elsif value.is_a?(Time)
                   format_time(value)
                 elsif value.is_a?(Float)
-                  sprintf "%.2f", value
+                  number_with_delimiter(sprintf('%.2f', value), delimiter: nil)
                 else
                   value
                 end
diff --git a/test/unit/lib/redmine/export/pdf/issues_pdf_test.rb b/test/unit/lib/redmine/export/pdf/issues_pdf_test.rb
index 4dd40b9fc..e150aca84 100644
--- a/test/unit/lib/redmine/export/pdf/issues_pdf_test.rb
+++ b/test/unit/lib/redmine/export/pdf/issues_pdf_test.rb
@@ -33,8 +33,13 @@ class IssuesPdfHelperTest < ActiveSupport::TestCase
     time_entry = TimeEntry.create!(:spent_on => Date.today, :hours => 4.3432, :user => user, :author => user,
                      :project_id => 1, :issue => issue, :activity => TimeEntryActivity.first)
 
-    results = fetch_row_values(issue, query, 0)
-    assert_equal ["2", "Add ingredients categories", "4.34"], results
+    to_test = {'en' => '4.34', 'de' => '4,34'}
+    to_test.each do |locale, expected|
+      with_locale locale do
+        results = fetch_row_values(issue, query, 0)
+        assert_equal ['2', 'Add ingredients categories', expected], results
+      end
+    end
   end
 
   def test_fetch_row_values_should_be_able_to_handle_parent_issue_subject