diff --git a/jps/model/src/org/jetbrains/ether/dependencyView/IntObjectPersistentMultiMaplet.java b/jps/model/src/org/jetbrains/ether/dependencyView/IntObjectPersistentMultiMaplet.java
index 100b125fe3c8..ee2a57226846 100644
--- a/jps/model/src/org/jetbrains/ether/dependencyView/IntObjectPersistentMultiMaplet.java
+++ b/jps/model/src/org/jetbrains/ether/dependencyView/IntObjectPersistentMultiMaplet.java
@@ -83,7 +83,7 @@ class IntObjectPersistentMultiMaplet<V extends Streamable> extends IntObjectMult
   public void replace(int key, Collection<V> value) {
     try {
       myCache.remove(key);
-      if (value == null || value.size() == 0) {
+      if (value == null || value.isEmpty()) {
         myMap.remove(key);
       }
       else {
diff --git a/jps/model/src/org/jetbrains/ether/dependencyView/IntObjectTransientMultiMaplet.java b/jps/model/src/org/jetbrains/ether/dependencyView/IntObjectTransientMultiMaplet.java
index e5d91e4d49c7..c9a8b889a441 100644
--- a/jps/model/src/org/jetbrains/ether/dependencyView/IntObjectTransientMultiMaplet.java
+++ b/jps/model/src/org/jetbrains/ether/dependencyView/IntObjectTransientMultiMaplet.java
@@ -55,7 +55,7 @@ class IntObjectTransientMultiMaplet<V extends Streamable> extends IntObjectMulti
 
   @Override
   public void replace(int key, Collection<V> value) {
-    if (value == null || value.size() == 0) {
+    if (value == null || value.isEmpty()) {
       myMap.remove(key);
     }
     else {