diff --git a/dumux/common/parameters.hh b/dumux/common/parameters.hh
index 4ae00d23f835b69ba58b91325448014df3ba2b2c..1e6733594ee4b69b833bb68785a360a5f13d3111 100644
--- a/dumux/common/parameters.hh
+++ b/dumux/common/parameters.hh
@@ -459,8 +459,9 @@ inline bool hasParamInGroup(const std::string& paramGroup, const std::string& pa
  * \brief Get a list of sub groups from the parameter tree sorted by relevance
  * \return A vector of fully qualified subGroup names sorted by descending relevance.
  */
-inline std::vector<std::string> getSubGroups(const std::string& paramGroup, const std::string& subGroupName)
-{  return Parameters::getTree().getSubGroups(subGroupName, paramGroup); }
-} // namespace Dumux
+inline std::vector<std::string> getParamSubGroups(const std::string& subGroupName, const std::string& paramGroup)
+{ return Parameters::getTree().getSubGroups(subGroupName, paramGroup); }
+
+} // end namespace Dumux
 
 #endif
diff --git a/dumux/linear/istlsolverfactorybackend.hh b/dumux/linear/istlsolverfactorybackend.hh
index 3c5d9706d3f3c64d3be1b968e095de8cbd7c611c..c01afb3a6ba9e1ef34e9373fa3cee9f1746d4253 100644
--- a/dumux/linear/istlsolverfactorybackend.hh
+++ b/dumux/linear/istlsolverfactorybackend.hh
@@ -166,15 +166,15 @@ private:
     void convertParameterTree_(const std::string& paramGroup="")
     {
         const auto& loggingTree = Parameters::getTree();
-        auto matchingGroups = loggingTree.getSubGroups("LinearSolver", paramGroup);
+        auto linearSolverGroups = getParamSubGroups("LinearSolver", paramGroup);
 
         for (const auto& [istlKey, dumuxKey] : istlToDumuxSolverParams)
         {
-            for (const auto fullGroup : matchingGroups)
+            for (const auto& group : linearSolverGroups)
             {
-                auto istlName = fullGroup + "." + istlKey;
-                auto dumuxName = fullGroup + "." + dumuxKey;
-                if(loggingTree.hasKeyOrDefaultKey(dumuxName))
+                auto istlName = group + "." + istlKey;
+                auto dumuxName = group + "." + dumuxKey;
+                if (loggingTree.hasKeyOrDefaultKey(dumuxName))
                 {
                     if(loggingTree.hasKeyOrDefaultKey(istlName))
                     {