diff --git a/ThirdParty/Ert/lib/ecl/ecl_smspec.cpp b/ThirdParty/Ert/lib/ecl/ecl_smspec.cpp
index a99cf7ab8b..11e769b7f5 100644
--- a/ThirdParty/Ert/lib/ecl/ecl_smspec.cpp
+++ b/ThirdParty/Ert/lib/ecl/ecl_smspec.cpp
@@ -28,6 +28,7 @@
 #include <map>
 #include <algorithm>
 #include <memory>
+#include <stdexcept>
 
 #include <ert/util/hash.hpp>
 #include <ert/util/util.h>