diff --git a/ALICE3/Core/FlatLutEntry.h b/ALICE3/Core/FlatLutEntry.h
index 8a01e9b508d..decde671a06 100644
--- a/ALICE3/Core/FlatLutEntry.h
+++ b/ALICE3/Core/FlatLutEntry.h
@@ -14,9 +14,9 @@
 
 #include <cmath>
 #include <cstdint>
+#include <fstream>
 #include <span>
 #include <vector>
-#include <fstream>
 
 #define LUTCOVM_VERSION 20210801