diff --git a/src/web_service/web_backend.cpp b/src/web_service/web_backend.cpp
index b1e02c57a..4208bd044 100644
--- a/src/web_service/web_backend.cpp
+++ b/src/web_service/web_backend.cpp
@@ -3,7 +3,6 @@
 // Refer to the license.txt file included.
 
 #include <array>
-#include <cstdlib>
 #include <mutex>
 #include <string>