diff --git a/opm/output/data/Wells.hpp b/opm/output/data/Wells.hpp
index 1a9502d35..d79361a66 100644
--- a/opm/output/data/Wells.hpp
+++ b/opm/output/data/Wells.hpp
@@ -51,6 +51,7 @@ namespace Opm {
                 polymer       = (1 << 3),
                 solvent       = (1 << 4),
                 dissolved_gas = (1 << 5),
+                vaporized_oil = (1 << 6),
             };
 
             using enum_size = std::underlying_type< opt >::type;
@@ -84,6 +85,7 @@ namespace Opm {
             double polymer = 0.0;
             double solvent = 0.0;
             double dissolved_gas = 0.0;
+            double vaporized_oil = 0.0;
     };
 
     struct Completion {
@@ -190,6 +192,7 @@ namespace Opm {
             case opt::polymer: return this->polymer;
             case opt::solvent: return this->solvent;
             case opt::dissolved_gas: return this->dissolved_gas;
+            case opt::vaporized_oil: return this->vaporized_oil;
         }
 
         throw std::invalid_argument(
diff --git a/tests/test_Summary.cpp b/tests/test_Summary.cpp
index 89b82a53b..93a36b800 100644
--- a/tests/test_Summary.cpp
+++ b/tests/test_Summary.cpp
@@ -137,6 +137,7 @@ static data::Wells result_wells() {
     rates1.set( rt::gas, -10.2 / day );
     rates1.set( rt::solvent, -10.3 / day );
     rates1.set( rt::dissolved_gas, -10.4 / day );
+    rates1.set( rt::vaporized_oil, -10.5 / day );
 
     data::Rates rates2;
     rates2.set( rt::wat, -20.0 / day );
@@ -144,6 +145,7 @@ static data::Wells result_wells() {
     rates2.set( rt::gas, -20.2 / day );
     rates2.set( rt::solvent, -20.3 / day );
     rates2.set( rt::dissolved_gas, -20.4 / day );
+    rates2.set( rt::vaporized_oil, -20.5 / day );
 
     data::Rates rates3;
     rates3.set( rt::wat, 30.0 / day );
@@ -151,6 +153,7 @@ static data::Wells result_wells() {
     rates3.set( rt::gas, 30.2 / day );
     rates3.set( rt::solvent, 30.3 / day );
     rates3.set( rt::dissolved_gas, 30.4 / day );
+    rates3.set( rt::vaporized_oil, 30.5 / day );
 
 
     /* completion rates */
@@ -160,6 +163,7 @@ static data::Wells result_wells() {
     crates1.set( rt::gas, -100.2 / day );
     crates1.set( rt::solvent, -100.3 / day );
     crates1.set( rt::dissolved_gas, -100.4 / day );
+    crates1.set( rt::vaporized_oil, -100.5 / day );
 
     data::Rates crates2;
     crates2.set( rt::wat, -200.0 / day );
@@ -167,6 +171,7 @@ static data::Wells result_wells() {
     crates2.set( rt::gas, -200.2 / day );
     crates2.set( rt::solvent, -200.3 / day );
     crates2.set( rt::dissolved_gas, -200.4 / day );
+    crates2.set( rt::vaporized_oil, -200.5 / day );
 
     data::Rates crates3;
     crates3.set( rt::wat, 300.0 / day );
@@ -174,6 +179,7 @@ static data::Wells result_wells() {
     crates3.set( rt::gas, 300.2 / day );
     crates3.set( rt::solvent, 300.3 / day );
     crates3.set( rt::dissolved_gas, 300.4 / day );
+    crates3.set( rt::vaporized_oil, 300.5 / day );
 
     /*
       The active index assigned to the completion must be manually