diff --git a/features/conditionalPaging/dataTables.conditionalPaging.js b/features/conditionalPaging/dataTables.conditionalPaging.js
index 7326351..4fb7fae 100644
--- a/features/conditionalPaging/dataTables.conditionalPaging.js
+++ b/features/conditionalPaging/dataTables.conditionalPaging.js
@@ -70,7 +70,7 @@
                     }
                 };
 
-            if ($.isNumeric(config.speed) || $.type(config.speed) === 'string') {
+            if ( config.speed !== undefined ) {
                 speed = config.speed;
             }
 
diff --git a/type-detection/formatted-num.js b/type-detection/formatted-num.js
index 24d7349..27ff033 100644
--- a/type-detection/formatted-num.js
+++ b/type-detection/formatted-num.js
@@ -19,9 +19,10 @@ jQuery.fn.dataTableExt.aTypes.unshift(
 	function ( sData )
 	{
 		var deformatted = sData.replace(/[^\d\-\.\/a-zA-Z]/g,'');
-		if ( $.isNumeric( deformatted ) || deformatted === "-" ) {
-			return 'formatted-num';
-		}
-		return null;
+		var isNumeric = !isNaN( deformatted - parseFloat( deformatted ) );
+
+		return isNumeric || deformatted === "-" ?
+			'formatted-num' :
+			null;
 	}
 );