diff --git a/fpmsyncd/fpmlink.cpp b/fpmsyncd/fpmlink.cpp
index bed95b1dd46c..464f96522175 100644
--- a/fpmsyncd/fpmlink.cpp
+++ b/fpmsyncd/fpmlink.cpp
@@ -89,7 +89,7 @@ int FpmLink::getFd()
     return m_connection_socket;
 }
 
-void FpmLink::readData()
+uint64_t FpmLink::readData()
 {
     fpm_msg_hdr_t *hdr;
     size_t msg_len;
@@ -133,4 +133,5 @@ void FpmLink::readData()
 
     memmove(m_messageBuffer, m_messageBuffer + start, m_pos - start);
     m_pos = m_pos - (uint32_t)start;
+    return 0;
 }
diff --git a/fpmsyncd/fpmlink.h b/fpmsyncd/fpmlink.h
index 7cd0635ed121..8ef570589f86 100644
--- a/fpmsyncd/fpmlink.h
+++ b/fpmsyncd/fpmlink.h
@@ -26,7 +26,7 @@ class FpmLink : public Selectable {
     void accept();
 
     int getFd() override;
-    void readData() override;
+    uint64_t readData() override;
     /* readMe throws FpmConnectionClosedException when connection is lost */
     class FpmConnectionClosedException : public std::exception
     {
diff --git a/orchagent/orch.h b/orchagent/orch.h
index f89f936ec696..0298770f2fac 100644
--- a/orchagent/orch.h
+++ b/orchagent/orch.h
@@ -82,7 +82,7 @@ class Executor : public Selectable
 
     // Decorating Selectable
     int getFd() override { return m_selectable->getFd(); }
-    void readData() override { m_selectable->readData(); }
+    uint64_t readData() override { return m_selectable->readData(); }
     bool hasCachedData() override { return m_selectable->hasCachedData(); }
     bool initializedWithData() override { return m_selectable->initializedWithData(); }
     void updateAfterRead() override { m_selectable->updateAfterRead(); }
diff --git a/teamsyncd/teamsync.cpp b/teamsyncd/teamsync.cpp
index bf3a1345f2da..d6f9555667eb 100644
--- a/teamsyncd/teamsync.cpp
+++ b/teamsyncd/teamsync.cpp
@@ -316,7 +316,8 @@ int TeamSync::TeamPortSync::getFd()
     return team_get_event_fd(m_team);
 }
 
-void TeamSync::TeamPortSync::readData()
+uint64_t TeamSync::TeamPortSync::readData()
 {
     team_handle_events(m_team);
+    return 0;
 }
diff --git a/teamsyncd/teamsync.h b/teamsyncd/teamsync.h
index 952dc8d4f3da..f47049d1a686 100644
--- a/teamsyncd/teamsync.h
+++ b/teamsyncd/teamsync.h
@@ -38,7 +38,7 @@ class TeamSync : public NetMsg
         ~TeamPortSync();
 
         int getFd() override;
-        void readData() override;
+        uint64_t readData() override;
 
         /* member_name -> enabled|disabled */
         std::map<std::string, bool> m_lagMembers;