diff --git a/src/jquery.fs.boxer.js b/src/jquery.fs.boxer.js
index 1e8a2d3..f250774 100644
--- a/src/jquery.fs.boxer.js
+++ b/src/jquery.fs.boxer.js
@@ -44,7 +44,7 @@
 		margin: 50,
 		minHeight: 100,
 		minWidth: 100,
-		mobile: false,
+		mobile: null,
 		opacity: 0.75,
 		retina: false,
 		requestKey: "boxer",
@@ -192,7 +192,7 @@
 				gallery: {
 					active: false
 				},
-				isMobile: (trueMobile || e.data.mobile),
+				isMobile: typeof(e.data.mobile) == 'boolean' ? e.data.mobile : trueMobile,
 				isAnimating: true,
 				oldContentHeight: 0,
 				oldContentWidth: 0
@@ -1220,4 +1220,4 @@
 			}
 		}
 	};
-})(jQuery, window);
\ No newline at end of file
+})(jQuery, window);