diff --git a/src/storm/modelchecker/prctl/helper/SparseMdpPrctlHelper.cpp b/src/storm/modelchecker/prctl/helper/SparseMdpPrctlHelper.cpp
index 66bcd497b..17bef0ff8 100644
--- a/src/storm/modelchecker/prctl/helper/SparseMdpPrctlHelper.cpp
+++ b/src/storm/modelchecker/prctl/helper/SparseMdpPrctlHelper.cpp
@@ -631,7 +631,7 @@ namespace storm {
                 std::vector<ValueType> maybeStateChoiceValues = std::vector<ValueType>(sizeMaybeStateChoiceValues, storm::utility::zero<ValueType>());
                 
                 // Check whether we need to compute exact probabilities for some states.
-                if (qualitative || maybeStatesNotRelevant || !goal.isShieldingTask()) {
+                if ((qualitative || maybeStatesNotRelevant) && !goal.isShieldingTask()) {
                     // Set the values for all maybe-states to 0.5 to indicate that their probability values are neither 0 nor 1.
                     storm::utility::vector::setVectorValues<ValueType>(result, qualitativeStateSets.maybeStates, storm::utility::convertNumber<ValueType>(0.5));
                 } else {