diff --git a/src/engine/polyline_compressor.cpp b/src/engine/polyline_compressor.cpp
index 61e4f2c8b..f057c0522 100644
--- a/src/engine/polyline_compressor.cpp
+++ b/src/engine/polyline_compressor.cpp
@@ -1,6 +1,7 @@
 #include "engine/polyline_compressor.hpp"
 
 #include <cstddef>
+#include <cstdlib>
 #include <cmath>
 
 namespace osrm