diff --git a/includes/class-init.php b/includes/class-init.php
index 9e24a323..bdb0fd2b 100644
--- a/includes/class-init.php
+++ b/includes/class-init.php
@@ -989,11 +989,11 @@ if ( ! class_exists( 'UM' ) ) {
         /**
          * @since 2.0
          *
-         * @return um\lib\mobiledetect\Mobile_Detect
+         * @return um\lib\mobiledetect\Um_Mobile_Detect
          */
         function mobile() {
             if ( empty( $this->classes['mobile'] ) ) {
-                $this->classes['mobile'] = new um\lib\mobiledetect\Mobile_Detect();
+                $this->classes['mobile'] = new um\lib\mobiledetect\Um_Mobile_Detect();
             }
 
             return $this->classes['mobile'];
diff --git a/includes/lib/mobiledetect/class-mobile-detect.php b/includes/lib/mobiledetect/class-um-mobile-detect.php
similarity index 99%
rename from includes/lib/mobiledetect/class-mobile-detect.php
rename to includes/lib/mobiledetect/class-um-mobile-detect.php
index 224d4339..08c3384c 100644
--- a/includes/lib/mobiledetect/class-mobile-detect.php
+++ b/includes/lib/mobiledetect/class-um-mobile-detect.php
@@ -4,8 +4,8 @@ namespace um\lib\mobiledetect;
 // Exit if accessed directly
 if ( ! defined( 'ABSPATH' ) ) exit;
 
-if ( ! class_exists( 'Mobile_Detect' ) ) {
-    class Mobile_Detect {
+if ( ! class_exists( 'Um_Mobile_Detect' ) ) {
+    class Um_Mobile_Detect {
         /**
          * Mobile detection type.
          *