diff --git a/services/oboeservice/AAudioServiceEndpoint.h b/services/oboeservice/AAudioServiceEndpoint.h
index a78d3fa..ed995e5 100644
--- a/services/oboeservice/AAudioServiceEndpoint.h
+++ b/services/oboeservice/AAudioServiceEndpoint.h
@@ -79,7 +79,7 @@
 
     std::vector<android::sp<AAudioServiceStreamShared>> mRegisteredStreams;
 
-    std::vector<android::sp<AAudioServiceStreamShared>> mRunningStreams;
+    size_t                   mRunningStreams = 0;
 
 private:
     aaudio_result_t startSharingThread_l();