diff --git a/src/sicccobject.H b/src/sicccobject.H
index f1e7e3f..5415caa 100644
--- a/src/sicccobject.H
+++ b/src/sicccobject.H
@@ -2,6 +2,7 @@
 #define __SICCCOBJECT_H_
 
 #include <iostream>
+#include <sstream>
 #include <chrono>
 #include <cstdlib>