diff --git a/src/cpp/server/load_reporter/util.cc b/src/cpp/server/load_reporter/util.cc
index a2f2f11e707..0f8fa764ad0 100644
--- a/src/cpp/server/load_reporter/util.cc
+++ b/src/cpp/server/load_reporter/util.cc
@@ -21,6 +21,7 @@
 #include <grpcpp/ext/server_load_reporting.h>
 
 #include <grpc/support/log.h>
+#include <cmath>
 
 namespace grpc {
 namespace load_reporter {