diff --git a/doc/doxygen/modules.txt b/doc/doxygen/modules.txt
index e742d9fec9fd2be1db143e4e82bff552f7f39c6d..4ad12ff178bed54f39dcb97a722b087ce8ad695c 100644
--- a/doc/doxygen/modules.txt
+++ b/doc/doxygen/modules.txt
@@ -194,9 +194,11 @@
  	 */
  	/*! \ingroup BenchmarksAndTests
  	 * \defgroup TwoPNCTests 2pnc (two phase, n-component) benchmarks and tests
+ 	 * TwoPNCTests contain a fuel cell test problem using the TwoPNCModel. The files are listed below.
  	 */
  	/*! \ingroup BenchmarksAndTests
  	 * \defgroup TwoPNCMinTests 2pncmin (two phase, n-component mineralization) benchmarks and tests
+ 	 * TwoPNCMinTests contain a salt dissolution test problem using the TwoPNCMinModel. The files are listed below.
  	 */
  	/*! \ingroup BenchmarksAndTests
  	 * \defgroup ThreePTests 3p (three phase) benchmarks and tests
diff --git a/test/porousmediumflow/2pnc/implicit/fuelcellproblem.hh b/test/porousmediumflow/2pnc/implicit/fuelcellproblem.hh
index c1a1c677558289558ab4ca77a1db40a26c91b8a1..541bf3b69a291698601acdcec8ec956dfe19a721 100644
--- a/test/porousmediumflow/2pnc/implicit/fuelcellproblem.hh
+++ b/test/porousmediumflow/2pnc/implicit/fuelcellproblem.hh
@@ -18,7 +18,7 @@
  *****************************************************************************/
 /*!
  * \file
- *
+ * \ingroup TwoPNCTests
  * \brief Definition of a problem for water management in PEM fuel cells.
  */
 #ifndef DUMUX_FUELCELL_PROBLEM_HH
@@ -35,7 +35,10 @@
 
 namespace Dumux
 {
-
+/*!
+ * \ingroup TwoPNCTests
+ * \brief Definition of a problem for water management in PEM fuel cells.
+ */
 template <class TypeTag>
 class FuelCellProblem;
 
diff --git a/test/porousmediumflow/2pnc/implicit/fuelcellspatialparams.hh b/test/porousmediumflow/2pnc/implicit/fuelcellspatialparams.hh
index 8f6e6f18d651c2d879b3b13f54801d700186c07d..27084bbe36de46ea579a1700a92d250d9913b44e 100644
--- a/test/porousmediumflow/2pnc/implicit/fuelcellspatialparams.hh
+++ b/test/porousmediumflow/2pnc/implicit/fuelcellspatialparams.hh
@@ -18,7 +18,7 @@
  *****************************************************************************/
 /*!
  * \file
- *
+ * \ingroup TwoPNCTests
  * \brief Definition of the spatial parameters for the fuel cell
  *        problem which uses the isothermal/non-insothermal 2pnc box model
  */
@@ -34,7 +34,11 @@
 
 namespace Dumux
 {
-
+/*!
+ * \ingroup TwoPNCTests
+ * \brief Definition of the spatial parameters for the fuel cell
+ *        problem which uses the isothermal/non-insothermal 2pnc box model
+ */
 //forward declaration
 template<class TypeTag>
 class FuelCellSpatialParams;
diff --git a/test/porousmediumflow/2pncmin/implicit/dissolutionproblem.hh b/test/porousmediumflow/2pncmin/implicit/dissolutionproblem.hh
index a901fe2fbed8bab322b5b0a75ae94a0a52393a06..328918f4c9295994137c30d64d418d23ba67a9a4 100644
--- a/test/porousmediumflow/2pncmin/implicit/dissolutionproblem.hh
+++ b/test/porousmediumflow/2pncmin/implicit/dissolutionproblem.hh
@@ -18,7 +18,7 @@
  *****************************************************************************/
 /*!
  * \file
- *
+ * \ingroup TwoPNCMinTests
  * \brief Problem where water is injected in a for flushing precipitated salt clogging a gas reservoir.
  */
 #ifndef DUMUX_DISSOLUTION_PROBLEM_HH
@@ -35,7 +35,10 @@
 
 namespace Dumux
 {
-
+/*!
+ * \ingroup TwoPNCMinTests
+ * \brief Problem where water is injected in a for flushing precipitated salt clogging a gas reservoir.
+ */
 template <class TypeTag>
 class DissolutionProblem;
 
diff --git a/test/porousmediumflow/2pncmin/implicit/dissolutionspatialparams.hh b/test/porousmediumflow/2pncmin/implicit/dissolutionspatialparams.hh
index c82c0b3a9d5e37fe2f8b9ac18d36874fe0eb6c4d..841e2f7963cf2909d1c655d72a8fa5600b622e17 100644
--- a/test/porousmediumflow/2pncmin/implicit/dissolutionspatialparams.hh
+++ b/test/porousmediumflow/2pncmin/implicit/dissolutionspatialparams.hh
@@ -16,6 +16,12 @@
  *   You should have received a copy of the GNU General Public License       *
  *   along with this program.  If not, see <http://www.gnu.org/licenses/>.   *
  *****************************************************************************/
+/*!
+ * \file
+ * \ingroup TwoPNCMinTests
+ * \brief Spatial parameters for the dissolution problem
+ * where water is injected in a for flushing precipitated salt clogging a gas reservoir.
+ */
 #ifndef DUMUX_INJECTION_SPATIAL_PARAMETERS_HH
 #define DUMUX_INJECTION_SPATIAL_PARAMETERS_HH
 
@@ -53,9 +59,10 @@ public:
 
 } // end namespace Properties
 
-/**
- * \brief Definition of the spatial parameters for the brine-co2 problem
- *
+/*!
+ * \ingroup TwoPNCMinTests
+ * \brief Spatial parameters for the dissolution problem
+ * where water is injected in a for flushing precipitated salt clogging a gas reservoir.
  */
 template<class TypeTag>
 class DissolutionSpatialparams : public FVSpatialParams<TypeTag>