diff --git a/src/storm-pars/analysis/Lattice.cpp b/src/storm-pars/analysis/Lattice.cpp
index 393079afb..a3fa9b8dc 100644
--- a/src/storm-pars/analysis/Lattice.cpp
+++ b/src/storm-pars/analysis/Lattice.cpp
@@ -6,11 +6,12 @@
 #include "Lattice.h"
 namespace storm {
     namespace analysis {
-        Lattice::Lattice(Node *topNode, Node *bottomNode, uint_fast64_t numberOfStates) {
+        Lattice::Lattice(storm::storage::BitVector topStates,
+                         storm::storage::BitVector bottomStates, uint_fast64_t numberOfStates) {
             Node *top = new Node();
-            top->states = topNode->states;
+            top->states = topStates;
             Node *bottom = new Node();
-            bottom->states = bottomNode->states;
+            bottom->states = bottomStates;
             top->below.push_back(bottom);
             bottom->above.push_back(top);
             nodes = std::vector<Node *>({top, bottom});
diff --git a/src/storm-pars/analysis/Lattice.h b/src/storm-pars/analysis/Lattice.h
index e80ab7035..6b5e6d32c 100644
--- a/src/storm-pars/analysis/Lattice.h
+++ b/src/storm-pars/analysis/Lattice.h
@@ -27,7 +27,8 @@ namespace storm {
                      * @param topNode The top node of the resulting lattice.
                      * @param bottomNode The bottom node of the resulting lattice.
                      */
-                    Lattice(Node *topNode, Node *bottomNode, uint_fast64_t numberOfStates);
+                    Lattice(storm::storage::BitVector topStates,
+                            storm::storage::BitVector bottomStates, uint_fast64_t numberOfStates);
 
                     /*!
                      * Adds a node with the given state below node1 and above node2.
diff --git a/src/storm-pars/analysis/Transformer.cpp b/src/storm-pars/analysis/Transformer.cpp
index 183a0412c..5cf39bb97 100644
--- a/src/storm-pars/analysis/Transformer.cpp
+++ b/src/storm-pars/analysis/Transformer.cpp
@@ -13,11 +13,8 @@ namespace storm {
             // Transform the transition matrix into a vector containing the states with the state to which the transition goes.
             std::vector<State*> stateVector = toStateVector(matrix, initialStates);
 
-            // TODO: not initializing all fields of Lattice::Node yet, what to do?
             // Start creating the Lattice
-            Lattice::Node top = {topStates};
-            Lattice::Node bottom = {bottomStates};
-            Lattice *lattice = new Lattice(&top, &bottom, numberOfStates);
+            Lattice *lattice = new Lattice(topStates, bottomStates, numberOfStates);
             storm::storage::BitVector oldStates(numberOfStates);
             // Create a copy of the states already present in the lattice.
             storm::storage::BitVector seenStates = topStates|=bottomStates;