diff --git a/lib/ctu.cpp b/lib/ctu.cpp
index 188327cdf..020167851 100644
--- a/lib/ctu.cpp
+++ b/lib/ctu.cpp
@@ -22,6 +22,7 @@
 #include "astutils.h"
 #include "symboldatabase.h"
 #include <tinyxml2.h>
+#include <iterator>  // back_inserter
 //---------------------------------------------------------------------------
 
 static const char ATTR_CALL_ID[] = "call-id";
diff --git a/lib/preprocessor.cpp b/lib/preprocessor.cpp
index 04a9b01e2..c29fcb45a 100644
--- a/lib/preprocessor.cpp
+++ b/lib/preprocessor.cpp
@@ -29,6 +29,7 @@
 #include <algorithm>
 #include <cstdint>
 #include <cstring>
+#include <iterator> // back_inserter
 #include <utility>
 
 /**