diff --git a/app/components/editable_champ/number_component/number_component.html.haml b/app/components/editable_champ/number_component/number_component.html.haml
index 806ce8d58..28c8ff6bd 100644
--- a/app/components/editable_champ/number_component/number_component.html.haml
+++ b/app/components/editable_champ/number_component/number_component.html.haml
@@ -1 +1 @@
-= @form.text_field(:value, input_opts(id: @champ.input_id, aria: { describedby: @champ.describedby_id }, placeholder: @champ.libelle, required: @champ.required?, pattern: "[0-9]*", inputmode: :decimal))
+= @form.text_field(:value, input_opts(id: @champ.input_id, aria: { describedby: @champ.describedby_id }, placeholder: @champ.libelle, required: @champ.required?, pattern: "-?[0-9]*", inputmode: :decimal))