diff --git a/src/techniques/dynamics/control-flow-unflattening.js b/src/techniques/dynamics/control-flow-unflattening.js
index b2acf50..374e646 100644
--- a/src/techniques/dynamics/control-flow-unflattening.js
+++ b/src/techniques/dynamics/control-flow-unflattening.js
@@ -78,7 +78,7 @@ export default function (babel) {
                 }
               }
             }
-            let testOuterLoop = vm.runInContext(generate(node.test).code, context);
+            let testOuterLoop = node.test === null || vm.runInContext(generate(node.test).code, context);
             if (!testOuterLoop) doHaveToSearch = false;
             iteration++;
           }