diff --git a/stock_usability/stock.py b/stock_usability/stock.py
index ea2f3cb..490745f 100644
--- a/stock_usability/stock.py
+++ b/stock_usability/stock.py
@@ -31,6 +31,13 @@ class StockPicking(models.Model):
             pick.message_post(_("Using <b>Force Availability</b>!"))
         return res
 
+    @api.multi
+    def do_unreserve(self):
+        res = super(StockPicking, self).do_unreserve()
+        for pick in self:
+            pick.message_post(_("Picking <b>unreserved</b>."))
+        return res
+
 
 class StockLocation(models.Model):
     _inherit = 'stock.location'
@@ -115,6 +122,22 @@ class StockMove(models.Model):
             res.append((line.id, name))
         return res
 
+    def button_do_unreserve(self):
+        for move in self:
+            move.do_unreserve()
+            if move.picking_id:
+                product = move.product_id
+                self.picking_id.message_post(_(
+                    "Product <a href=# data-oe-model=product.product "
+                    "data-oe-id=%d>%s</a> qty %s %s <b>unreserved</b>")
+                    % (product.id, product.display_name,
+                       move.product_qty, move.product_id.uom_id.name))
+            ops = self.env['stock.pack.operation']
+            for smol in move.linked_move_operation_ids:
+                if smol.operation_id:
+                    ops += smol.operation_id
+            ops.unlink()
+
 
 class StockIncoterms(models.Model):
     _inherit = 'stock.incoterms'
diff --git a/stock_usability/stock_view.xml b/stock_usability/stock_view.xml
index 50a0d16..3e5bb3a 100644
--- a/stock_usability/stock_view.xml
+++ b/stock_usability/stock_view.xml
@@ -114,14 +114,11 @@
     <field name="model">stock.move</field>
     <field name="inherit_id" ref="stock.view_move_form" />
     <field name="arch" type="xml">
-        <!-- There are no button any more on that view...
-            so probably not a good idea to add one
-        <button name="force_assign" position="after">
-            <button type="object" name="do_unreserve" string="Unreserve"
+        <field name="state" position="before">
+            <button type="object" name="button_do_unreserve" string="Unreserve"
                 groups="stock.group_stock_user"
                 states="confirmed,assigned"/>
-        </button>
-        -->
+        </field>
         <field name="picking_id" position="after">
             <field name="inventory_id" readonly="1"/>
         </field>
@@ -152,6 +149,11 @@
     <field name="model">stock.move</field>
     <field name="inherit_id" ref="stock.view_move_picking_form" />
     <field name="arch" type="xml">
+        <field name="state" position="before">
+            <button type="object" name="button_do_unreserve" string="Unreserve"
+                groups="stock.group_stock_user"
+                states="confirmed,assigned"/>
+        </field>
         <field name="group_id" position="replace"/> <!-- in stock, this field has invisible="1" re-add it below as visible -->
         <group name="moved_quants_grp" position="after">
             <notebook colspan="2">
@@ -187,6 +189,12 @@
         <field name="location_dest_id" position="attributes">
             <attribute name="invisible">0</attribute>
         </field>
+        <field name="state" position="after">
+            <button type="object" name="button_do_unreserve" string="Unreserve"
+                groups="stock.group_stock_user"
+                states="confirmed,assigned"
+                icon="fa-ban"/>
+        </field>
     </field>
 </record>