diff --git a/tv/tuner/aidl/default/Filter.cpp b/tv/tuner/aidl/default/Filter.cpp
index 7b62c3e..d8f5dd5 100644
--- a/tv/tuner/aidl/default/Filter.cpp
+++ b/tv/tuner/aidl/default/Filter.cpp
@@ -326,6 +326,8 @@
     ALOGV("%s", __FUNCTION__);
     mFilterThreadRunning = true;
     std::vector<DemuxFilterEvent> events;
+
+    mFilterCount += 1;
     // All the filter event callbacks in start are for testing purpose.
     switch (mType.mainType) {
         case DemuxFilterMainType::TS:
@@ -362,6 +364,8 @@
 ::ndk::ScopedAStatus Filter::stop() {
     ALOGV("%s", __FUNCTION__);
 
+    mFilterCount -= 1;
+
     mFilterThreadRunning = false;
     if (mFilterThread.joinable()) {
         mFilterThread.join();
diff --git a/tv/tuner/aidl/default/Filter.h b/tv/tuner/aidl/default/Filter.h
index 1cf6b3a..e2a0c7a 100644
--- a/tv/tuner/aidl/default/Filter.h
+++ b/tv/tuner/aidl/default/Filter.h
@@ -289,6 +289,7 @@
     uint8_t mIpCidMonitored = 0;
 
     PlaybackStatus mIptvDvrPlaybackStatus;
+    std::atomic<int> mFilterCount = 0;
 };
 
 }  // namespace tuner