diff --git a/lib/step.js b/lib/step.js
index b524a6a..dc83e47 100755
--- a/lib/step.js
+++ b/lib/step.js
@@ -99,7 +99,7 @@ function Step() {
         localCallback(error, result);
       }
     }
-    process.nextTick(check); // Ensures that check is called at least once
+    Step.nextTick(check); // Ensures that check is called at least once
 
     // Generates a callback for the group
     return function () {
@@ -145,6 +145,20 @@ Step.fn = function StepFn() {
   }
 }
 
+// nextTick with browser fallback
+if (typeof process === 'undefined' || !(process.nextTick)) {
+  if (typeof setImmediate == 'function') {
+    Step.nextTick = function(fn){
+      setImmediate(fn)
+    };
+  } else {
+    Step.nextTick = function (fn) {
+      setTimeout(fn, 0);
+    };
+  }
+} else {
+  Step.nextTick = process.nextTick;
+}
 
 // Hook into commonJS module systems
 if (typeof module !== 'undefined' && "exports" in module) {