diff --git a/addons/project/project_view.xml b/addons/project/project_view.xml
index 2784a0780bc..97f4dc0eb28 100644
--- a/addons/project/project_view.xml
+++ b/addons/project/project_view.xml
@@ -262,7 +262,7 @@
                     <group colspan="6" col="6">
                         <field name="name" select="1" attrs="{'readonly':[('state','=','done')]}" />
                         <field name="project_id" required="1" select="1" attrs="{'readonly':[('state','=','done')]}" />
-                        <field name="total_hours" widget="float_time" attrs="{'readonly':[('state','=','done')]}" />
+                        <field name="total_hours" widget="float_time"/>
                         <field name="user_id" select="1" attrs="{'readonly':[('state','=','done')]}" />
                         <field name="date_deadline" select="2" attrs="{'readonly':[('state','=','done')]}" />
                         <field name="progress" widget="progressbar"/>