diff --git a/app/assets/stylesheets/new_design/helpers.scss b/app/assets/stylesheets/new_design/helpers.scss
index e6500b579..f8f0f71bf 100644
--- a/app/assets/stylesheets/new_design/helpers.scss
+++ b/app/assets/stylesheets/new_design/helpers.scss
@@ -11,3 +11,8 @@
 .mb-4 {
   margin-bottom: 4 * $default-spacer;
 }
+
+.numbers-delimiter {
+  display: inline-block;
+  width: 5px;
+}
diff --git a/app/helpers/number_helper.rb b/app/helpers/number_helper.rb
new file mode 100644
index 000000000..01e169d2f
--- /dev/null
+++ b/app/helpers/number_helper.rb
@@ -0,0 +1,6 @@
+module NumberHelper
+  def number_with_html_delimiter(num)
+    # we are using the span delimiter that doesn't insert spaces when copying and pasting the number
+    number_with_delimiter(num, delimiter: tag.span(class: 'numbers-delimiter'))
+  end
+end
diff --git a/app/views/shared/dossiers/_champ_row.html.haml b/app/views/shared/dossiers/_champ_row.html.haml
index 25644bb62..18d69d390 100644
--- a/app/views/shared/dossiers/_champ_row.html.haml
+++ b/app/views/shared/dossiers/_champ_row.html.haml
@@ -35,7 +35,7 @@
             - when TypeDeChamp.type_champs.fetch(:datetime)
               = c.to_s
             - when TypeDeChamp.type_champs.fetch(:number)
-              = number_with_delimiter(c.to_s)
+              = number_with_html_delimiter(c.to_s)
             - else
               = format_text_value(c.to_s)