diff --git a/RealDataBench.cpp b/RealDataBench.cpp
index 570b9c8..3a57868 100644
--- a/RealDataBench.cpp
+++ b/RealDataBench.cpp
@@ -1,5 +1,6 @@
 #include <ConflictSet.h>
 
+#include <cerrno>
 #include <chrono>
 #include <cstdio>
 #include <cstring>