diff --git a/platform/lang-api/src/com/intellij/execution/configurations/ConfigurationTypeBase.java b/platform/lang-api/src/com/intellij/execution/configurations/ConfigurationTypeBase.java
index e47eb7877d32..b6ab46753b3e 100644
--- a/platform/lang-api/src/com/intellij/execution/configurations/ConfigurationTypeBase.java
+++ b/platform/lang-api/src/com/intellij/execution/configurations/ConfigurationTypeBase.java
@@ -16,12 +16,10 @@
 
 package com.intellij.execution.configurations;
 
+import com.intellij.util.ArrayUtil;
 import org.jetbrains.annotations.NotNull;
 
 import javax.swing.*;
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.List;
 
 /**
  * @author yole
@@ -44,10 +42,7 @@ public abstract class ConfigurationTypeBase implements ConfigurationType {
   }
 
   protected void addFactory(ConfigurationFactory factory) {
-    List<ConfigurationFactory> newFactories = new ArrayList<ConfigurationFactory>(myFactories.length + 1);
-    Collections.addAll(newFactories, myFactories);
-    newFactories.add(factory);
-    myFactories = newFactories.toArray(new ConfigurationFactory[newFactories.size()]);
+    myFactories = ArrayUtil.append(myFactories, factory);
   }
 
   @Override