diff --git a/opm/core/props/satfunc/SatFuncBase.hpp b/opm/core/props/satfunc/SatFuncBase.hpp
index 88b42b9b..775f527d 100644
--- a/opm/core/props/satfunc/SatFuncBase.hpp
+++ b/opm/core/props/satfunc/SatFuncBase.hpp
@@ -65,6 +65,14 @@ namespace Opm
     
     // Hysteresis
     struct SatHyst {
+        SatHyst() {
+            sg_hyst = -1.0;
+            sow_hyst = -1.0;
+
+            sg_shift = 0.0;
+            sow_shift = 0.0;
+        }
+
         double sg_hyst;
         double sg_shift;
         double sow_hyst;