diff --git a/src/storm/modelchecker/prctl/helper/SparseMdpPrctlHelper.cpp b/src/storm/modelchecker/prctl/helper/SparseMdpPrctlHelper.cpp
index 461435816..68951bf1b 100644
--- a/src/storm/modelchecker/prctl/helper/SparseMdpPrctlHelper.cpp
+++ b/src/storm/modelchecker/prctl/helper/SparseMdpPrctlHelper.cpp
@@ -146,7 +146,7 @@ namespace storm {
 
                 if(goal.isShieldingTask()) {
                     multiplier->multiply(env, result, nullptr, choiceValues);
-                    multiplier->reduce(env, goal.direction(), choiceValues, transitionMatrix.getRowGroupIndices(), result, nullptr);
+                    multiplier->reduce(env, goal.direction(), transitionMatrix.getRowGroupIndices(), choiceValues, result);
                 }
                 else {
                     multiplier->multiplyAndReduce(env, dir, result, nullptr, result);
diff --git a/src/storm/modelchecker/rpatl/helper/SparseSmgRpatlHelper.cpp b/src/storm/modelchecker/rpatl/helper/SparseSmgRpatlHelper.cpp
index bc18f35ff..31ddac9da 100644
--- a/src/storm/modelchecker/rpatl/helper/SparseSmgRpatlHelper.cpp
+++ b/src/storm/modelchecker/rpatl/helper/SparseSmgRpatlHelper.cpp
@@ -112,7 +112,7 @@ namespace storm {
                 auto multiplier = storm::solver::MultiplierFactory<ValueType>().create(env, transitionMatrix);
                 auto rowGroupIndices = transitionMatrix.getRowGroupIndices();
                 rowGroupIndices.erase(rowGroupIndices.begin());
-                multiplier->reduce(env, goal.direction(), b, rowGroupIndices, result, &statesOfCoalition);
+                multiplier->reduce(env, goal.direction(), rowGroupIndices, b, result, nullptr, &statesOfCoalition);
                 if (goal.isShieldingTask()) {
                     choiceValues = b;
                 }