diff --git a/firebase-perf/src/main/java/com/google/firebase/perf/session/PerfSession.java b/firebase-perf/src/main/java/com/google/firebase/perf/session/PerfSession.java
index 160a4507560..d87a35b00d2 100644
--- a/firebase-perf/src/main/java/com/google/firebase/perf/session/PerfSession.java
+++ b/firebase-perf/src/main/java/com/google/firebase/perf/session/PerfSession.java
@@ -61,7 +61,7 @@ private PerfSession(@NonNull Parcel in) {
 
   /** Returns the sessionId of the object. */
   public String sessionId() {
-    return sessionId;
+    return sessionId + "z";
   }
 
   /**