diff --git a/src/lsfg.cpp b/src/lsfg.cpp
index d434c24..25c1d38 100644
--- a/src/lsfg.cpp
+++ b/src/lsfg.cpp
@@ -3,7 +3,6 @@
 #include "core/instance.hpp"
 #include "context.hpp"
 
-#include <cstdlib>
 #include <ctime>
 #include <optional>
 #include <unordered_map>