diff --git a/manager.cpp b/manager.cpp
index 36285ff..1aeaf4b 100644
--- a/manager.cpp
+++ b/manager.cpp
@@ -2,10 +2,10 @@
 
 #include "utils.hpp"
 
-#include <assert.h>
-
 #include <phosphor-logging/lg2.hpp>
 
+#include <cassert>
+
 namespace rules = sdbusplus::bus::match::rules;
 
 namespace // anonymous