diff --git a/src/base/stats/mysql.cc b/src/base/stats/mysql.cc
index 1e3ab0f84a..cfac9a2260 100644
--- a/src/base/stats/mysql.cc
+++ b/src/base/stats/mysql.cc
@@ -29,6 +29,7 @@
  */
 
 #include <cassert>
+#include <cstdio>
 #include <map>
 #include <sstream>
 #include <string>