diff --git a/libraries/aupt-lib/src/android/support/test/aupt/AuptTestRunner.java b/libraries/aupt-lib/src/android/support/test/aupt/AuptTestRunner.java
index 3927f82..652b143 100644
--- a/libraries/aupt-lib/src/android/support/test/aupt/AuptTestRunner.java
+++ b/libraries/aupt-lib/src/android/support/test/aupt/AuptTestRunner.java
@@ -124,7 +124,7 @@
 
         // Option: -e jankInterval integer
         long interval = parseLongParam("jankInterval", -1L);
-        if (interval != -1L) {
+        if (interval <= 0) {
             mTrackJank = true;
             mGraphicsStatsMonitor = new GraphicsStatsMonitor();
             mGraphicsStatsMonitor.setIntervalRate(interval);