diff --git a/opm/core/tof/FlowDiagnostics.cpp b/opm/core/tof/FlowDiagnostics.cpp
index ef3a4bc6d..a31ce4980 100644
--- a/opm/core/tof/FlowDiagnostics.cpp
+++ b/opm/core/tof/FlowDiagnostics.cpp
@@ -20,6 +20,7 @@
 #include <opm/core/tof/FlowDiagnostics.hpp>
 
 #include <opm/core/utility/ErrorMacros.hpp>
+#include <algorithm>
 #include <numeric>
 
 namespace Opm