diff --git a/src/mongo/base/initializer.cpp b/src/mongo/base/initializer.cpp
index 4e1f36a83ce14..8792ec2de9754 100644
--- a/src/mongo/base/initializer.cpp
+++ b/src/mongo/base/initializer.cpp
@@ -15,6 +15,7 @@
 
 #include "mongo/base/initializer.h"
 
+#include <iostream>
 #include "mongo/base/global_initializer.h"
 
 namespace mongo {