diff --git a/odoo/addons/base/models/ir_ui_view.py b/odoo/addons/base/models/ir_ui_view.py
index 0234662644a..bf1f62381f3 100644
--- a/odoo/addons/base/models/ir_ui_view.py
+++ b/odoo/addons/base/models/ir_ui_view.py
@@ -976,7 +976,7 @@ actual arch.
                         not self._context.get("create", True) and is_base_model):
                     node.set("create", 'false')
 
-        if node.tag in ('kanban', 'tree', 'form', 'gantt', 'activity'):
+        if node.tag in ('kanban', 'tree', 'form', 'activity'):
             for action, operation in (('create', 'create'), ('delete', 'unlink'), ('edit', 'write')):
                 if (not node.get(action) and
                         not Model.check_access_rights(operation, raise_exception=False) or
diff --git a/odoo/addons/base/rng/gantt_view.rng b/odoo/addons/base/rng/gantt_view.rng
deleted file mode 100644
index 2180800c8de..00000000000
--- a/odoo/addons/base/rng/gantt_view.rng
+++ /dev/null
@@ -1,71 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<rng:grammar xmlns:rng="http://relaxng.org/ns/structure/1.0"
-             xmlns:a="http://relaxng.org/ns/annotation/1.0"
-             datatypeLibrary="http://www.w3.org/2001/XMLSchema-datatypes">
-    <!-- Handling of element overloading when inheriting from a base
-         template
-    -->
-    <rng:include href="common.rng"/>
-    <rng:define name="gantt">
-        <rng:element name="gantt">
-            <rng:attribute name="date_start"/>
-            <rng:attribute name="date_stop"/>
-
-            <rng:optional><rng:attribute name="js_class"/></rng:optional>
-            <rng:optional><rng:attribute name="progress"/></rng:optional>
-            <rng:optional><rng:attribute name="consolidation"/></rng:optional>
-            <rng:optional><rng:attribute name="consolidation_max"/></rng:optional>
-            <rng:optional><rng:attribute name="consolidation_exclude"/></rng:optional>
-            <rng:optional><rng:attribute name="string"/></rng:optional>
-            <rng:optional><rng:attribute name="create"/></rng:optional>
-            <rng:optional><rng:attribute name="on_create"/></rng:optional>
-            <rng:optional><rng:attribute name="edit"/></rng:optional>
-            <rng:optional><rng:attribute name="plan"/></rng:optional>
-            <rng:optional><rng:attribute name="default_group_by"/></rng:optional>
-            <rng:optional><rng:attribute name="display_unavailability"/></rng:optional>
-            <rng:optional><rng:attribute name="total_row"/></rng:optional>
-            <rng:optional><rng:attribute name="collapse_first_level"/></rng:optional>
-            <rng:optional><rng:attribute name="offset"/></rng:optional>
-            <rng:optional><rng:attribute name="scales"/></rng:optional>
-
-            <rng:optional>
-                <rng:attribute name="default_scale">
-                    <rng:choice>
-                        <rng:value>day</rng:value>
-                        <rng:value>week</rng:value>
-                        <rng:value>month</rng:value>
-                        <rng:value>year</rng:value>
-                    </rng:choice>
-                </rng:attribute>
-            </rng:optional>
-
-            <rng:optional><rng:attribute name="precision"/></rng:optional>
-
-            <rng:optional><rng:attribute name="color"/></rng:optional>
-
-            <rng:optional><rng:attribute name="decoration-secondary"/></rng:optional>
-            <rng:optional><rng:attribute name="decoration-success"/></rng:optional>
-            <rng:optional><rng:attribute name="decoration-info"/></rng:optional>
-            <rng:optional><rng:attribute name="decoration-warning"/></rng:optional>
-            <rng:optional><rng:attribute name="decoration-danger"/></rng:optional>
-
-            <rng:interleave>
-                <rng:zeroOrMore><rng:ref name="field"/></rng:zeroOrMore>
-                <rng:optional>
-                    <rng:element name="templates">
-                        <rng:oneOrMore>
-                            <rng:ref name="any"/>
-                        </rng:oneOrMore>
-                    </rng:element>
-                </rng:optional>
-            </rng:interleave>
-
-            <rng:empty/>
-        </rng:element>
-    </rng:define>
-    <rng:start>
-        <rng:choice>
-            <rng:ref name="gantt" />
-        </rng:choice>
-    </rng:start>
-</rng:grammar>
diff --git a/odoo/tools/view_validation.py b/odoo/tools/view_validation.py
index 9751c386a2b..f135e52dc3a 100644
--- a/odoo/tools/view_validation.py
+++ b/odoo/tools/view_validation.py
@@ -183,7 +183,7 @@ def relaxng(view_type):
     return _relaxng_cache[view_type]
 
 
-@validate('calendar', 'diagram', 'gantt', 'graph', 'pivot', 'search', 'tree', 'activity')
+@validate('calendar', 'diagram', 'graph', 'pivot', 'search', 'tree', 'activity')
 def schema_valid(arch, **kwargs):
     """ Get RNG validator and validate RNG file."""
     validator = relaxng(arch.tag)