diff --git a/monitor.cpp b/monitor.cpp
index caab61b..e2e912a 100644
--- a/monitor.cpp
+++ b/monitor.cpp
@@ -33,8 +33,7 @@
 using namespace phosphor::logging;
 
 // Callback handler when there is an activity on the FD
-int Monitor::processEvents(sd_event_source* es, int fd, uint32_t revents,
-                           void* userData)
+int Monitor::processEvents(sd_event_source*, int, uint32_t, void* userData)
 {
     log<level::INFO>("GPIO line altered");
     auto monitor = static_cast<Monitor*>(userData);
diff --git a/presence/gpio_presence.cpp b/presence/gpio_presence.cpp
index 4326602..d2d2892 100644
--- a/presence/gpio_presence.cpp
+++ b/presence/gpio_presence.cpp
@@ -81,8 +81,7 @@
 }
 
 // Callback handler when there is an activity on the FD
-int Presence::processEvents(sd_event_source* es, int fd, uint32_t revents,
-                            void* userData)
+int Presence::processEvents(sd_event_source*, int, uint32_t, void* userData)
 {
     auto presence = static_cast<Presence*>(userData);
 
diff --git a/test/utest.cpp b/test/utest.cpp
index 5fb870f..8e0091e 100644
--- a/test/utest.cpp
+++ b/test/utest.cpp
@@ -53,8 +53,7 @@
     }
 
     // Callback handler on data
-    static int callbackHandler(sd_event_source* es, int fd, uint32_t revents,
-                               void* userData)
+    static int callbackHandler(sd_event_source*, int, uint32_t, void*)
     {
         std::cout << "Event fired" << std::endl;
         completed = true;