diff --git a/wp-admin/edit-form-advanced.php b/wp-admin/edit-form-advanced.php
index 13d4046c03..e604573565 100644
--- a/wp-admin/edit-form-advanced.php
+++ b/wp-admin/edit-form-advanced.php
@@ -245,7 +245,7 @@ $form_extra  .= "<input type='hidden' id='post_ID' name='post_ID' value='" . esc
 // Detect if there exists an autosave newer than the post and if that autosave is different than the post.
 if ( $autosave && mysql2date( 'U', $autosave->post_modified_gmt, false ) > mysql2date( 'U', $post->post_modified_gmt, false ) ) {
 	foreach ( _wp_post_revision_fields( $post ) as $autosave_field => $_autosave_field ) {
-		if ( normalize_whitespace( $autosave->$autosave_field ) != normalize_whitespace( $post->$autosave_field ) ) {
+		if ( normalize_whitespace( $autosave->$autosave_field ) !== normalize_whitespace( $post->$autosave_field ) ) {
 			$notice = sprintf(
 				/* translators: %s: URL to view the autosave. */
 				__( 'There is an autosave of this post that is more recent than the version below. <a href="%s">View the autosave</a>' ),
diff --git a/wp-admin/includes/post.php b/wp-admin/includes/post.php
index d9ef63f7b2..ad01e545b3 100644
--- a/wp-admin/includes/post.php
+++ b/wp-admin/includes/post.php
@@ -1829,7 +1829,7 @@ function wp_create_post_autosave( $post_data ) {
 		// If the new autosave has the same content as the post, delete the autosave.
 		$autosave_is_different = false;
 		foreach ( array_intersect( array_keys( $new_autosave ), array_keys( _wp_post_revision_fields( $post ) ) ) as $field ) {
-			if ( normalize_whitespace( $new_autosave[ $field ] ) != normalize_whitespace( $post->$field ) ) {
+			if ( normalize_whitespace( $new_autosave[ $field ] ) !== normalize_whitespace( $post->$field ) ) {
 				$autosave_is_different = true;
 				break;
 			}
diff --git a/wp-includes/rest-api/endpoints/class-wp-rest-autosaves-controller.php b/wp-includes/rest-api/endpoints/class-wp-rest-autosaves-controller.php
index af5f51f74f..86c9cd45f6 100644
--- a/wp-includes/rest-api/endpoints/class-wp-rest-autosaves-controller.php
+++ b/wp-includes/rest-api/endpoints/class-wp-rest-autosaves-controller.php
@@ -368,7 +368,7 @@ class WP_REST_Autosaves_Controller extends WP_REST_Revisions_Controller {
 			$autosave_is_different = false;
 
 			foreach ( array_intersect( array_keys( $new_autosave ), array_keys( _wp_post_revision_fields( $post ) ) ) as $field ) {
-				if ( normalize_whitespace( $new_autosave[ $field ] ) != normalize_whitespace( $post->$field ) ) {
+				if ( normalize_whitespace( $new_autosave[ $field ] ) !== normalize_whitespace( $post->$field ) ) {
 					$autosave_is_different = true;
 					break;
 				}
diff --git a/wp-includes/revision.php b/wp-includes/revision.php
index 00e58fa179..eec6c29700 100644
--- a/wp-includes/revision.php
+++ b/wp-includes/revision.php
@@ -162,7 +162,7 @@ function wp_save_post_revision( $post_id ) {
 			$post_has_changed = false;
 
 			foreach ( array_keys( _wp_post_revision_fields( $post ) ) as $field ) {
-				if ( normalize_whitespace( $post->$field ) != normalize_whitespace( $last_revision->$field ) ) {
+				if ( normalize_whitespace( $post->$field ) !== normalize_whitespace( $last_revision->$field ) ) {
 					$post_has_changed = true;
 					break;
 				}
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 78eb9eb075..71596d2e03 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.4-beta2-47371';
+$wp_version = '5.4-beta2-47372';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.