diff --git a/src/storm/solver/GmmxxMultiplier.cpp b/src/storm/solver/GmmxxMultiplier.cpp
index bfed0bf25..95abf61fb 100644
--- a/src/storm/solver/GmmxxMultiplier.cpp
+++ b/src/storm/solver/GmmxxMultiplier.cpp
@@ -221,7 +221,7 @@ namespace storm {
         template<typename ValueType, typename Compare>
         class TbbMultAddReduceFunctor {
         public:
-            TbbMultAddReduceFunctor(std::vector<uint64_t> const& rowGroupIndices, gmm::csr_matrix<ValueType> const& matrix, std::vector<ValueType> const& x, std::vector<ValueType> const* b, std::vector<ValueType>& result, std::vector<uint64_t>* choices) : dir(dir), rowGroupIndices(rowGroupIndices), matrix(matrix), x(x), b(b), result(result), choices(choices) {
+            TbbMultAddReduceFunctor(std::vector<uint64_t> const& rowGroupIndices, gmm::csr_matrix<ValueType> const& matrix, std::vector<ValueType> const& x, std::vector<ValueType> const* b, std::vector<ValueType>& result, std::vector<uint64_t>* choices) : rowGroupIndices(rowGroupIndices), matrix(matrix), x(x), b(b), result(result), choices(choices) {
                 // Intentionally left empty.
             }
             
@@ -229,7 +229,6 @@ namespace storm {
                 typedef std::vector<ValueType> VectorType;
                 typedef gmm::csr_matrix<ValueType> MatrixType;
 
-                bool min = dir == OptimizationDirection::Minimize;
                 auto groupIt = rowGroupIndices.begin() + range.begin();
                 auto groupIte = rowGroupIndices.begin() + range.end();
                 
@@ -310,7 +309,7 @@ namespace storm {
             if (dir == storm::OptimizationDirection::Minimize) {
                 tbb::parallel_for(tbb::blocked_range<unsigned long>(0, rowGroupIndices.size() - 1, 100), TbbMultAddReduceFunctor<ValueType, storm::utility::ElementLess<ValueType>>(rowGroupIndices, this->gmmMatrix, x, b, result, choices));
             } else {
-                tbb::parallel_for(tbb::blocked_range<unsigned long>(0, rowGroupIndices.size() - 1, 100), TbbMultAddReduceFunctor<ValueType storm::utility::ElementGreater<ValueType>>(rowGroupIndices, this->gmmMatrix, x, b, result, choices));
+                tbb::parallel_for(tbb::blocked_range<unsigned long>(0, rowGroupIndices.size() - 1, 100), TbbMultAddReduceFunctor<ValueType, storm::utility::ElementGreater<ValueType>>(rowGroupIndices, this->gmmMatrix, x, b, result, choices));
             }
 #else
             STORM_LOG_WARN("Storm was built without support for Intel TBB, defaulting to sequential version.");
diff --git a/src/storm/storage/SparseMatrix.cpp b/src/storm/storage/SparseMatrix.cpp
index a2b23eac9..559902e77 100644
--- a/src/storm/storage/SparseMatrix.cpp
+++ b/src/storm/storage/SparseMatrix.cpp
@@ -1771,12 +1771,11 @@ namespace storm {
             typedef typename storm::storage::SparseMatrix<ValueType>::value_type value_type;
             typedef typename storm::storage::SparseMatrix<ValueType>::const_iterator const_iterator;
             
-            TbbMultAddReduceFunctor(std::vector<uint64_t> const& rowGroupIndices, std::vector<MatrixEntry<index_type, value_type>> const& columnsAndEntries, std::vector<uint64_t> const& rowIndications, std::vector<ValueType> const& x, std::vector<ValueType>& result, std::vector<value_type> const* summand, std::vector<uint_fast64_t>* choices) : dir(dir), rowGroupIndices(rowGroupIndices), columnsAndEntries(columnsAndEntries), rowIndications(rowIndications), x(x), result(result), summand(summand), choices(choices) {
+            TbbMultAddReduceFunctor(std::vector<uint64_t> const& rowGroupIndices, std::vector<MatrixEntry<index_type, value_type>> const& columnsAndEntries, std::vector<uint64_t> const& rowIndications, std::vector<ValueType> const& x, std::vector<ValueType>& result, std::vector<value_type> const* summand, std::vector<uint_fast64_t>* choices) : rowGroupIndices(rowGroupIndices), columnsAndEntries(columnsAndEntries), rowIndications(rowIndications), x(x), result(result), summand(summand), choices(choices) {
                 // Intentionally left empty.
             }
             
             void operator()(tbb::blocked_range<index_type> const& range) const {
-                bool min = dir == storm::OptimizationDirection::Minimize;
 
                 auto groupIt = rowGroupIndices.begin() + range.begin();
                 auto groupIte = rowGroupIndices.begin() + range.end();
@@ -1843,7 +1842,7 @@ namespace storm {
                         
                         // Finally write value to target vector.
                         *resultIt = currentValue;
-                        if (choices && compare(currentValue, oldSelectedValue)) {
+                        if (choices && compare(currentValue, oldSelectedChoiceValue)) {
                             *choiceIt = selectedChoice;
                         }
                     }