diff --git a/lib/utils/mutate.js b/lib/utils/mutate.js
index 3dc3f52..7537542 100644
--- a/lib/utils/mutate.js
+++ b/lib/utils/mutate.js
@@ -40,13 +40,15 @@ utils.mutate = {
   },
 
   any: function (str) {
-    switch (random.number(3)) {
+    switch (random.number(4)) {
       case 0:
         return utils.mutate.text(str)
       case 1:
         return utils.mutate.numbers(str)
       case 2:
         return utils.mutate.units(str)
+      case 3:
+        return utils.mutate.random(str)
     }
   }
 }