diff --git a/src/core_io.h b/src/core_io.h
index 8a7d58057..26a1293df 100644
--- a/src/core_io.h
+++ b/src/core_io.h
@@ -2,6 +2,7 @@
 #define __BITCOIN_CORE_IO_H__
 
 #include <string>
+#include <vector>
 
 class uint256;
 class CScript;
diff --git a/src/core_read.cpp b/src/core_read.cpp
index 0f06bb695..9022ffaf2 100644
--- a/src/core_read.cpp
+++ b/src/core_read.cpp
@@ -1,5 +1,4 @@
 
-#include <vector>
 #include "core_io.h"
 #include "core.h"
 #include "serialize.h"
diff --git a/src/core_write.cpp b/src/core_write.cpp
index 2eb220779..d9e31ed8c 100644
--- a/src/core_write.cpp
+++ b/src/core_write.cpp
@@ -1,5 +1,4 @@
 
-#include <vector>
 #include "core_io.h"
 #include "univalue/univalue.h"
 #include "script.h"