diff --git a/opm/core/fluid/RockCompressibility.cpp b/opm/core/fluid/RockCompressibility.cpp
index ca4e3ec6..bb6863c2 100644
--- a/opm/core/fluid/RockCompressibility.cpp
+++ b/opm/core/fluid/RockCompressibility.cpp
@@ -19,12 +19,22 @@
 
 #include <opm/core/fluid/RockCompressibility.hpp>
 #include <opm/core/eclipse/EclipseGridParser.hpp>
+#include <opm/core/utility/parameters/ParameterGroup.hpp>
+#include <opm/core/utility/Units.hpp>
 #include <opm/core/utility/ErrorMacros.hpp>
 #include <opm/core/utility/linearInterpolation.hpp>
 
 namespace Opm
 {
 
+    RockCompressibility::RockCompressibility(const parameter::ParameterGroup& param)
+        : pref_(0.0),
+          rock_comp_(0.0)
+    {
+        pref_ = param.getDefault("rock_compressibility_pref", 100*unit::barsa);
+        pref_ = param.getDefault("rock_compressibility", 0.0);
+    }
+
     RockCompressibility::RockCompressibility(const EclipseGridParser& deck)
         : pref_(0.0),
           rock_comp_(0.0)
diff --git a/opm/core/fluid/RockCompressibility.hpp b/opm/core/fluid/RockCompressibility.hpp
index 746ffeac..bcba5aa5 100644
--- a/opm/core/fluid/RockCompressibility.hpp
+++ b/opm/core/fluid/RockCompressibility.hpp
@@ -26,6 +26,7 @@ namespace Opm
 {
 
     class EclipseGridParser;
+    namespace parameter { class ParameterGroup; }
 
     class RockCompressibility
     {
@@ -33,6 +34,9 @@ namespace Opm
         /// Construct from input deck.
         RockCompressibility(const EclipseGridParser& deck);
 
+        /// Construct from parameters.
+        RockCompressibility(const parameter::ParameterGroup& param);
+
         /// Porosity multiplier.
         double poroMult(double pressure);