diff --git a/services/powermanager/WorkDuration.cpp b/services/powermanager/WorkDuration.cpp
index ef723c2..bd2b10a 100644
--- a/services/powermanager/WorkDuration.cpp
+++ b/services/powermanager/WorkDuration.cpp
@@ -25,8 +25,9 @@
 
 WorkDuration::WorkDuration(int64_t startTimestampNanos, int64_t totalDurationNanos,
                            int64_t cpuDurationNanos, int64_t gpuDurationNanos)
-      : workPeriodStartTimestampNanos(startTimestampNanos),
+      : timestampNanos(0),
         actualTotalDurationNanos(totalDurationNanos),
+        workPeriodStartTimestampNanos(startTimestampNanos),
         actualCpuDurationNanos(cpuDurationNanos),
         actualGpuDurationNanos(gpuDurationNanos) {}
 
diff --git a/services/powermanager/include/android/WorkDuration.h b/services/powermanager/include/android/WorkDuration.h
index 99b5b8b..26a575f 100644
--- a/services/powermanager/include/android/WorkDuration.h
+++ b/services/powermanager/include/android/WorkDuration.h
@@ -61,11 +61,11 @@
         return os;
     }
 
-    int64_t workPeriodStartTimestampNanos;
+    int64_t timestampNanos;
     int64_t actualTotalDurationNanos;
+    int64_t workPeriodStartTimestampNanos;
     int64_t actualCpuDurationNanos;
     int64_t actualGpuDurationNanos;
-    int64_t timestampNanos;
 };
 
 } // namespace android::os