diff --git a/source/Ox/js/Type.js b/source/Ox/js/Type.js
index 10e8fedb..0f83224e 100644
--- a/source/Ox/js/Type.js
+++ b/source/Ox/js/Type.js
@@ -206,9 +206,11 @@ Ox.isInt <f> Tests if a value is an integer
     true
     > Ox.isInt(0.5)
     false
+    > Ox.isInt(Infinity)
+    false
 @*/
 Ox.isInt = function(value) {
-    return value === Math.floor(value);
+    return isFinite(value) && value === Math.floor(value);
 };
 
 /*@