diff --git a/camera/ndk/NdkCameraCaptureSession.cpp b/camera/ndk/NdkCameraCaptureSession.cpp
index 540d84e..ab796fb 100644
--- a/camera/ndk/NdkCameraCaptureSession.cpp
+++ b/camera/ndk/NdkCameraCaptureSession.cpp
@@ -80,7 +80,9 @@
 
     if (session->isClosed()) {
         ALOGE("%s: session %p is already closed", __FUNCTION__, session);
-        *captureSequenceId = CAPTURE_SEQUENCE_ID_NONE;
+        if (captureSequenceId != nullptr) {
+            *captureSequenceId = CAPTURE_SEQUENCE_ID_NONE;
+        }
         return ACAMERA_ERROR_SESSION_CLOSED;
     }