diff --git a/lib/proxysql_utils.cpp b/lib/proxysql_utils.cpp
index 3f1eddf5e..27d8051be 100644
--- a/lib/proxysql_utils.cpp
+++ b/lib/proxysql_utils.cpp
@@ -2,6 +2,7 @@
 
 #include <functional>
 #include <sstream>
+#include <algorithm>
 
 #include <fcntl.h>
 #include <poll.h>