--- a/LineManip.cc
+++ b/LineManip.cc
@@ -3,10 +3,11 @@
 // 
 
 #include <unistd.h>
 #include <ncurses.h>
 #include <ctype.h>
+#include <cstdlib>
 
 #include "LineManip.h"
 #include "Util.h"
 
 #ifdef __DEBUG__