diff --git a/libs/vr/libdisplay/vsync_client.cpp b/libs/vr/libdisplay/vsync_client.cpp
index a0fb313..c928a08 100644
--- a/libs/vr/libdisplay/vsync_client.cpp
+++ b/libs/vr/libdisplay/vsync_client.cpp
@@ -26,7 +26,10 @@
           status.GetErrorMessage().c_str());
     return -status.error();
   }
-  *timestamp_ns = status.get();
+
+  if (timestamp_ns != nullptr) {
+    *timestamp_ns = status.get();
+  }
   return 0;
 }