diff --git a/services/surfaceflinger/DispSync.h b/services/surfaceflinger/DispSync.h
index c9f3b04..880a24d 100644
--- a/services/surfaceflinger/DispSync.h
+++ b/services/surfaceflinger/DispSync.h
@@ -59,6 +59,8 @@
     explicit DispSync(const char* name);
     ~DispSync();
 
+    void init(bool hasSyncFramework, int64_t dispSyncPresentTimeOffset);
+
     // reset clears the resync samples and error value.
     void reset();