diff --git a/dynare++/parser/cc/atom_assignings.cpp b/dynare++/parser/cc/atom_assignings.cpp
index 7335c9003d5f54b9799c10198a9887470429c0e0..7b688f259a918b4218d982e556ab3ecb77629d22 100644
--- a/dynare++/parser/cc/atom_assignings.cpp
+++ b/dynare++/parser/cc/atom_assignings.cpp
@@ -9,6 +9,7 @@
 #include "utils/cc/exception.h"
 
 #include <limits>
+#include <iostream>
 
 using namespace ogp;