diff --git a/src/source_base.cc b/src/source_base.cc
index 8f9972a..ff4c884 100644
--- a/src/source_base.cc
+++ b/src/source_base.cc
@@ -1,5 +1,3 @@
-#include <utility>
-
 #include "source_base.h"
 #include "info.h"
 #include "terminal.h"