Index: src/BurgerSpaceEngine.cpp
--- src/BurgerSpaceEngine.cpp.orig
+++ src/BurgerSpaceEngine.cpp
@@ -30,6 +30,7 @@
 #include <fstream>
 #include <iomanip>
 #include <algorithm>
+#include <sstream>
 
 #include <sys/types.h>
 #include <sys/stat.h>
