diff --git a/core/src/main/java/org/teavm/dependency/DependencyAnalyzer.java b/core/src/main/java/org/teavm/dependency/DependencyAnalyzer.java
index 96c3e98b6..042018743 100644
--- a/core/src/main/java/org/teavm/dependency/DependencyAnalyzer.java
+++ b/core/src/main/java/org/teavm/dependency/DependencyAnalyzer.java
@@ -75,7 +75,7 @@ public class DependencyAnalyzer implements DependencyInfo {
     private CachedMapper<String, ClassDependency> classCache;
     private List<DependencyListener> listeners = new ArrayList<>();
     private ServiceRepository services;
-    private Deque<DependencyNodeToNodeTransition> pendingTransitions = new ArrayDeque<>();
+    private Deque<Transition> pendingTransitions = new ArrayDeque<>();
     private Deque<Runnable> tasks = new ArrayDeque<>();
     private Queue<Runnable> deferredTasks = new ArrayDeque<>();
     List<DependencyType> types = new ArrayList<>();
@@ -275,7 +275,7 @@ public class DependencyAnalyzer implements DependencyInfo {
         }
     }
 
-    void schedulePropagation(DependencyNodeToNodeTransition consumer, DependencyType type) {
+    void schedulePropagation(Transition consumer, DependencyType type) {
         if (!consumer.destination.filter(type)) {
             return;
         }
@@ -294,7 +294,7 @@ public class DependencyAnalyzer implements DependencyInfo {
         }
     }
 
-    void schedulePropagation(DependencyNodeToNodeTransition consumer, DependencyType[] types) {
+    void schedulePropagation(Transition consumer, DependencyType[] types) {
         if (types.length == 0) {
             return;
         }
@@ -630,7 +630,7 @@ public class DependencyAnalyzer implements DependencyInfo {
 
     private void processNodeToNodeTransitionQueue() {
         while (!pendingTransitions.isEmpty()) {
-            DependencyNodeToNodeTransition transition = pendingTransitions.remove();
+            Transition transition = pendingTransitions.remove();
             IntSet pendingTypes = transition.pendingTypes;
             transition.pendingTypes = null;
             if (pendingTypes.size() == 1) {
diff --git a/core/src/main/java/org/teavm/dependency/DependencyNode.java b/core/src/main/java/org/teavm/dependency/DependencyNode.java
index 22b291e8b..5ee8c062e 100644
--- a/core/src/main/java/org/teavm/dependency/DependencyNode.java
+++ b/core/src/main/java/org/teavm/dependency/DependencyNode.java
@@ -36,8 +36,8 @@ public class DependencyNode implements ValueDependencyInfo {
     DependencyAnalyzer dependencyAnalyzer;
     List<DependencyConsumer> followers;
     TypeSet typeSet;
-    ObjectObjectHashMap<DependencyNode, DependencyNodeToNodeTransition> transitions;
-    ObjectArrayList<DependencyNodeToNodeTransition> transitionList;
+    ObjectObjectHashMap<DependencyNode, Transition> transitions;
+    ObjectArrayList<Transition> transitionList;
     String tag;
     private DependencyNode arrayItemNode;
     private DependencyNode classValueNode;
@@ -78,15 +78,15 @@ public class DependencyNode implements ValueDependencyInfo {
             }
         }
 
-        ObjectArrayList<DependencyNodeToNodeTransition> transitions = new ObjectArrayList<>(typeSet.getTransitions());
+        ObjectArrayList<Transition> transitions = new ObjectArrayList<>(typeSet.getTransitions());
         List<ConsumerWithNode> consumerEntries = typeSet.getConsumers();
 
         if (action != null) {
             action.run();
         }
 
-        for (ObjectCursor<DependencyNodeToNodeTransition> cursor : transitions) {
-            DependencyNodeToNodeTransition transition = cursor.value;
+        for (ObjectCursor<Transition> cursor : transitions) {
+            Transition transition = cursor.value;
             if (transition.source.filter(type) && transition.filterType(type)) {
                 dependencyAnalyzer.schedulePropagation(transition, type);
             }
@@ -156,15 +156,15 @@ public class DependencyNode implements ValueDependencyInfo {
             }
         }
 
-        ObjectArrayList<DependencyNodeToNodeTransition> transitions = new ObjectArrayList<>(typeSet.getTransitions());
+        ObjectArrayList<Transition> transitions = new ObjectArrayList<>(typeSet.getTransitions());
         List<ConsumerWithNode> consumerEntries = typeSet.getConsumers();
 
         if (action != null) {
             action.run();
         }
 
-        for (ObjectCursor<DependencyNodeToNodeTransition> cursor : transitions) {
-            DependencyNodeToNodeTransition transition = cursor.value;
+        for (ObjectCursor<Transition> cursor : transitions) {
+            Transition transition = cursor.value;
             DependencyType[] typesToPropagate = newTypes;
             if (transition.source.typeFilter != null || transition.filter != null) {
                 int j = 0;
@@ -276,7 +276,7 @@ public class DependencyNode implements ValueDependencyInfo {
             return;
         }
 
-        DependencyNodeToNodeTransition transition = new DependencyNodeToNodeTransition(this, node, filter);
+        Transition transition = new Transition(this, node, filter);
         transitions.put(node, transition);
         transitionList.add(transition);
         if (DependencyAnalyzer.shouldLog) {
@@ -358,8 +358,7 @@ public class DependencyNode implements ValueDependencyInfo {
             return;
         }
 
-        for (DependencyNodeToNodeTransition transition : classNodeParent.transitionList
-                .toArray(DependencyNodeToNodeTransition.class)) {
+        for (Transition transition : classNodeParent.transitionList.toArray(Transition.class)) {
             connect(transition.destination.getClassValueNode());
         }
     }
@@ -370,7 +369,7 @@ public class DependencyNode implements ValueDependencyInfo {
         }
     }
 
-    private void propagateTypes(DependencyNodeToNodeTransition transition) {
+    private void propagateTypes(Transition transition) {
         if (typeSet != null) {
             dependencyAnalyzer.schedulePropagation(transition, getTypesInternal());
         }
@@ -522,8 +521,8 @@ public class DependencyNode implements ValueDependencyInfo {
             }
 
             if (node.transitions != null) {
-                for (ObjectCursor<DependencyNodeToNodeTransition> cursor : node.transitionList) {
-                    DependencyNodeToNodeTransition transition = cursor.value;
+                for (ObjectCursor<Transition> cursor : node.transitionList) {
+                    Transition transition = cursor.value;
                     if (transition.filter == null && transition.destination.typeSet == typeSet
                             && !visited.contains(transition.destination) && transition.isDestSubsetOfSrc()) {
                         stack.push(transition.destination);
diff --git a/core/src/main/java/org/teavm/dependency/DependencyNodeToNodeTransition.java b/core/src/main/java/org/teavm/dependency/Transition.java
similarity index 96%
rename from core/src/main/java/org/teavm/dependency/DependencyNodeToNodeTransition.java
rename to core/src/main/java/org/teavm/dependency/Transition.java
index a111d1f13..c2f526c5b 100644
--- a/core/src/main/java/org/teavm/dependency/DependencyNodeToNodeTransition.java
+++ b/core/src/main/java/org/teavm/dependency/Transition.java
@@ -22,7 +22,7 @@ import java.util.Collection;
 import org.teavm.model.ClassReaderSource;
 import org.teavm.model.ValueType;
 
-class DependencyNodeToNodeTransition  {
+class Transition {
     DependencyNode source;
     DependencyNode destination;
     DependencyTypeFilter filter;
@@ -30,7 +30,7 @@ class DependencyNodeToNodeTransition  {
     IntHashSet pendingTypes;
     byte destSubsetOfSrc;
 
-    DependencyNodeToNodeTransition(DependencyNode source, DependencyNode destination, DependencyTypeFilter filter) {
+    Transition(DependencyNode source, DependencyNode destination, DependencyTypeFilter filter) {
         this.source = source;
         this.destination = destination;
         this.filter = filter;
@@ -79,7 +79,7 @@ class DependencyNodeToNodeTransition  {
     }
 
     boolean shouldMergeDomains() {
-        if (filter != null) {
+        if (filter != null || !isDestSubsetOfSrc()) {
             return false;
         }
         if (destination.typeSet == null) {
diff --git a/core/src/main/java/org/teavm/dependency/TypeSet.java b/core/src/main/java/org/teavm/dependency/TypeSet.java
index 15e81bd29..e603a0b2d 100644
--- a/core/src/main/java/org/teavm/dependency/TypeSet.java
+++ b/core/src/main/java/org/teavm/dependency/TypeSet.java
@@ -34,7 +34,7 @@ class TypeSet {
     private int typesCount;
 
     Set<DependencyNode> domain = new LinkedHashSet<>();
-    ObjectArrayList<DependencyNodeToNodeTransition> transitions;
+    ObjectArrayList<Transition> transitions;
     ArrayList<ConsumerWithNode> consumers;
 
     TypeSet(DependencyAnalyzer dependencyAnalyzer, DependencyNode origin) {
@@ -154,13 +154,13 @@ class TypeSet {
         consumers = null;
     }
 
-    ObjectArrayList<DependencyNodeToNodeTransition> getTransitions() {
+    ObjectArrayList<Transition> getTransitions() {
         if (transitions == null) {
             transitions = new ObjectArrayList<>(domain.size() * 2);
             for (DependencyNode node : domain) {
                 if (node.transitions != null) {
-                    for (ObjectCursor<DependencyNodeToNodeTransition> cursor : node.transitionList) {
-                        DependencyNodeToNodeTransition transition = cursor.value;
+                    for (ObjectCursor<Transition> cursor : node.transitionList) {
+                        Transition transition = cursor.value;
                         if (transition.filter != null || transition.destination.typeSet != this) {
                             transitions.add(transition);
                         }