diff --git a/lib/mysql_connection.cpp b/lib/mysql_connection.cpp
index 9d3c0e7a5..39c09f945 100644
--- a/lib/mysql_connection.cpp
+++ b/lib/mysql_connection.cpp
@@ -2,7 +2,6 @@
 #include "cpp.h"
 #include "SpookyV2.h"
 #include <fcntl.h>
-#include <regex.h>
 
 extern const CHARSET_INFO * proxysql_find_charset_nr(unsigned int nr);