diff --git a/src/wp-admin/theme-editor.php b/src/wp-admin/theme-editor.php
index e7fd3fa88b8e5..6715f4a9b6ca7 100644
--- a/src/wp-admin/theme-editor.php
+++ b/src/wp-admin/theme-editor.php
@@ -15,7 +15,7 @@
 }
 
 if ( ! current_user_can( 'edit_themes' ) ) {
-	wp_die( '<p>' . __( 'Sorry, you are not allowed to edit templates for this site.' ) . '</p>' );
+	wp_die( '<p>' . __( 'Sorry, you are not allowed to edit templates for this site.' ) . '</p>', 403 );
 }
 
 // Used in the HTML title tag.
@@ -70,7 +70,7 @@
 $theme = wp_get_theme( $stylesheet );
 
 if ( ! $theme->exists() ) {
-	wp_die( __( 'The requested theme does not exist.' ) );
+	wp_die( __( 'The requested theme does not exist.' ), 404 );
 }
 
 if ( $theme->errors() && 'theme_no_stylesheet' === $theme->errors()->get_error_code() ) {
diff --git a/src/wp-admin/theme-install.php b/src/wp-admin/theme-install.php
index e9d217c0f7525..1b245a2f0e15c 100644
--- a/src/wp-admin/theme-install.php
+++ b/src/wp-admin/theme-install.php
@@ -13,7 +13,7 @@
 $tab = ! empty( $_REQUEST['tab'] ) ? sanitize_text_field( $_REQUEST['tab'] ) : '';
 
 if ( ! current_user_can( 'install_themes' ) ) {
-	wp_die( __( 'Sorry, you are not allowed to install themes on this site.' ) );
+	wp_die( __( 'Sorry, you are not allowed to install themes on this site.' ), 403 );
 }
 
 if ( is_multisite() && ! is_network_admin() ) {
diff --git a/src/wp-admin/themes.php b/src/wp-admin/themes.php
index 08245a09718e0..ffa216e910516 100644
--- a/src/wp-admin/themes.php
+++ b/src/wp-admin/themes.php
@@ -83,7 +83,7 @@
 		exit;
 	} elseif ( 'enable-auto-update' === $_GET['action'] ) {
 		if ( ! ( current_user_can( 'update_themes' ) && wp_is_auto_update_enabled_for_type( 'theme' ) ) ) {
-			wp_die( __( 'Sorry, you are not allowed to enable themes automatic updates.' ) );
+			wp_die( __( 'Sorry, you are not allowed to enable themes automatic updates.' ), 403 );
 		}
 
 		check_admin_referer( 'updates' );
@@ -103,7 +103,7 @@
 		exit;
 	} elseif ( 'disable-auto-update' === $_GET['action'] ) {
 		if ( ! ( current_user_can( 'update_themes' ) && wp_is_auto_update_enabled_for_type( 'theme' ) ) ) {
-			wp_die( __( 'Sorry, you are not allowed to disable themes automatic updates.' ) );
+			wp_die( __( 'Sorry, you are not allowed to disable themes automatic updates.' ), 403 );
 		}
 
 		check_admin_referer( 'updates' );