diff --git a/src/utils/lineFileUtilities/lineFileUtilities.h b/src/utils/lineFileUtilities/lineFileUtilities.h
index 688bf09b6ef87e8616a53e2fd193d270dd6271aa..3e786fc7f0cbf3e686fa2d6911e818f71fbfdd4e 100644
--- a/src/utils/lineFileUtilities/lineFileUtilities.h
+++ b/src/utils/lineFileUtilities/lineFileUtilities.h
@@ -5,6 +5,7 @@
 #include <string>
 #include <cstring>
 #include <sstream>
+#include <cstdlib>
 
 using namespace std;