diff --git a/wp-admin/includes/plugin-install.php b/wp-admin/includes/plugin-install.php
index bc22aa838..86b1baf42 100644
--- a/wp-admin/includes/plugin-install.php
+++ b/wp-admin/includes/plugin-install.php
@@ -771,7 +771,7 @@ function wp_install_plugin($package, $feedback = '') {
 
 	if( $wp_filesystem->exists( $plugins_dir . $filelist[0] ) ) {
 		$wp_filesystem->delete($working_dir, true);
-		return new WP_Error('install_folder_exists', __('Folder allready exists.'), $filelist[0] );
+		return new WP_Error('install_folder_exists', __('Folder already exists.'), $filelist[0] );
 	}
 
 	apply_filters('install_feedback', __('Installing the plugin'));