diff --git a/addons/mail/static/src/component_hooks/use_should_update_based_on_props/use_should_update_based_on_props.js b/addons/mail/static/src/component_hooks/use_should_update_based_on_props/use_should_update_based_on_props.js
index 336278077bc..142cd288049 100644
--- a/addons/mail/static/src/component_hooks/use_should_update_based_on_props/use_should_update_based_on_props.js
+++ b/addons/mail/static/src/component_hooks/use_should_update_based_on_props/use_should_update_based_on_props.js
@@ -5,41 +5,21 @@ const { Component } = owl;
 const { onPatched } = owl.hooks;
 
 /**
- * Compares `a` and `b` up to the given `propsCompareDepth`.
+ * Shallow compares props `a` and `b`.
  *
- * @param {any} a
- * @param {any} b
- * @param {Object|integer} propsCompareDepth
+ * @param {Object} a
+ * @param {Object} b
  * @returns {boolean}
  */
-function isEqual(a, b, propsCompareDepth) {
+function isEqual(a, b) {
     const keys = Object.keys(a);
     if (Object.keys(b).length !== keys.length) {
         return false;
     }
     for (const key of keys) {
-        // the depth can be given either as a number (for all keys) or as
-        // an object (for each key)
-        let depth;
-        if (typeof propsCompareDepth === 'number') {
-            depth = propsCompareDepth;
-        } else {
-            depth = propsCompareDepth[key] || 0;
-        }
-        if (depth === 0 && a[key] !== b[key]) {
+        if (a[key] !== b[key]) {
             return false;
         }
-        if (depth !== 0) {
-            let nextDepth;
-            if (typeof depth === 'number') {
-                nextDepth = depth - 1;
-            } else {
-                nextDepth = depth;
-            }
-            if (!isEqual(a[key], b[key], nextDepth)) {
-                return false;
-            }
-        }
     }
     return true;
 }
@@ -49,12 +29,8 @@ function isEqual(a, b, propsCompareDepth) {
  * updated if its props actually changed. This is especially useful to use on
  * components for which an extra render costs proportionally a lot more than
  * comparing props.
- *
- * @param {Object} [param0={}]
- * @param {Object} [param0.propsCompareDepth={}] allows to specify the comparison
- *  depth to use for each prop. Default is shallow compare (depth = 0).
  */
-export function useShouldUpdateBasedOnProps({ propsCompareDepth = {} } = {}) {
+export function useShouldUpdateBasedOnProps() {
     const component = Component.current;
     let forceRender = false;
     component.shouldUpdate = nextProps => {
@@ -68,7 +44,7 @@ export function useShouldUpdateBasedOnProps({ propsCompareDepth = {} } = {}) {
                 allNewProps[key] = defaultProps[key];
             }
         }
-        forceRender = !isEqual(component.props, allNewProps, propsCompareDepth);
+        forceRender = !isEqual(component.props, allNewProps);
         return forceRender;
     };
     onPatched(() => forceRender = false);
diff --git a/addons/mail/static/src/utils/messaging_component.js b/addons/mail/static/src/utils/messaging_component.js
index a8cc1718f53..c157d8ca82d 100644
--- a/addons/mail/static/src/utils/messaging_component.js
+++ b/addons/mail/static/src/utils/messaging_component.js
@@ -16,10 +16,8 @@ const componentRegistry = {};
  *
  * @param {Component} ComponentClass the constructor of the component to be
  *      registered. Its name will be used as its key in the registry.
- * @param {Object} [param1]
- * @param {Object} [param1.propsCompareDepth] @see useShouldUpdateBasedOnProps
  */
-export function registerMessagingComponent(ComponentClass, { propsCompareDepth = {} } = {}) {
+export function registerMessagingComponent(ComponentClass) {
     const { defaultProps, components, name, props } = ComponentClass;
     if (componentRegistry[name]) {
         throw new Error(`There already is a registered component with the name "${name}"`);
@@ -31,7 +29,7 @@ export function registerMessagingComponent(ComponentClass, { propsCompareDepth =
         setup() {
             this.root = useRef('root');
             useModels();
-            useShouldUpdateBasedOnProps({ propsCompareDepth });
+            useShouldUpdateBasedOnProps();
             super.setup();
         }
         get className() {