diff --git a/dumux/common/numericdifferentiation.hh b/dumux/common/numericdifferentiation.hh
index d1b02cb883ccbc395b91e20ddbf6040861759e15..9e7af2a78fbeba1d3d73d213e780a62a9c6c2455 100644
--- a/dumux/common/numericdifferentiation.hh
+++ b/dumux/common/numericdifferentiation.hh
@@ -14,6 +14,7 @@
 #define DUMUX_NUMERIC_DIFFERENTIATION_HH
 
 #include <cmath>
+#include <cassert>
 #include <limits>
 
 namespace Dumux {