diff --git a/src/Basic_Requirement_Checker.php b/src/Basic_Requirement_Checker.php
index b54474dd860a0ddc495d6404f1f0b5f9f6960998..c259647bb2eb53fcbe7f0bc242f056f87500c8f0 100644
--- a/src/Basic_Requirement_Checker.php
+++ b/src/Basic_Requirement_Checker.php
@@ -362,7 +362,7 @@ if ( ! class_exists( 'WPDesk_Basic_Requirement_Checker' ) ) {
 		}
 		
 		/**
-		 * @param $slug
+		 * @param string $slug
 		 *
 		 * @return bool
 		 */
@@ -379,7 +379,7 @@ if ( ! class_exists( 'WPDesk_Basic_Requirement_Checker' ) ) {
 		}
 		
 		/**
-		 * @param $slug
+		 * @param string $slug
 		 *
 		 * @return $this
 		 */