diff --git a/src/wp-admin/includes/class-plugin-upgrader.php b/src/wp-admin/includes/class-plugin-upgrader.php
index a11fd1a1d9..27dc757f19 100644
--- a/src/wp-admin/includes/class-plugin-upgrader.php
+++ b/src/wp-admin/includes/class-plugin-upgrader.php
@@ -64,9 +64,6 @@ class Plugin_Upgrader extends WP_Upgrader {
 		$this->strings['process_failed']       = __( 'Plugin update failed.' );
 		$this->strings['process_success']      = __( 'Plugin updated successfully.' );
 		$this->strings['process_bulk_success'] = __( 'Plugins updated successfully.' );
-
-		/* translators: 1: Plugin name, 2: Plugin version. */
-		$this->strings['process_success_specific'] = __( 'Successfully installed the plugin <strong>%1$s %2$s</strong>.' );
 	}
 
 	/**
@@ -85,6 +82,8 @@ class Plugin_Upgrader extends WP_Upgrader {
 		$this->strings['no_files']            = __( 'The plugin contains no files.' );
 		$this->strings['process_failed']      = __( 'Plugin installation failed.' );
 		$this->strings['process_success']     = __( 'Plugin installed successfully.' );
+		/* translators: 1: Plugin name, 2: Plugin version. */
+		$this->strings['process_success_specific'] = __( 'Successfully installed the plugin <strong>%1$s %2$s</strong>.' );
 
 		if ( ! empty( $this->skin->overwrite ) ) {
 			if ( 'update-plugin' === $this->skin->overwrite ) {
diff --git a/src/wp-admin/includes/class-theme-upgrader.php b/src/wp-admin/includes/class-theme-upgrader.php
index f087eb6281..c08d3c2d5c 100644
--- a/src/wp-admin/includes/class-theme-upgrader.php
+++ b/src/wp-admin/includes/class-theme-upgrader.php
@@ -163,7 +163,7 @@ class Theme_Upgrader extends WP_Upgrader {
 		// Override them.
 		$this->skin->api = $api;
 
-		$this->strings['process_success_specific'] = $this->strings['parent_theme_install_success']; //, $api->name, $api->version );
+		$this->strings['process_success_specific'] = $this->strings['parent_theme_install_success'];
 
 		$this->skin->feedback( 'parent_theme_prepare_install', $api->name, $api->version );