diff --git a/platform/util/src/com/intellij/util/LineSeparator.java b/platform/util/src/com/intellij/util/LineSeparator.java
index 961d2d2ec68e..7a064aa786f6 100644
--- a/platform/util/src/com/intellij/util/LineSeparator.java
+++ b/platform/util/src/com/intellij/util/LineSeparator.java
@@ -8,7 +8,6 @@ import com.intellij.openapi.util.SystemInfo;
 import com.intellij.openapi.util.text.StringUtil;
 import com.intellij.openapi.vfs.CharsetToolkit;
 import org.jetbrains.annotations.NotNull;
-import org.jetbrains.annotations.Nullable;
 
 /**
  * <p>Identifies a line separator:
@@ -52,10 +51,6 @@ public enum LineSeparator {
     return myBytes;
   }
 
-  public static boolean knownAndDifferent(@Nullable LineSeparator separator1, @Nullable LineSeparator separator2) {
-    return separator1 != null && separator2 != null && !separator1.equals(separator2);
-  }
-
   @NotNull
   public static LineSeparator getSystemLineSeparator() {
     return SystemInfo.isWindows ? CRLF : LF;
diff --git a/platform/util/src/com/intellij/util/containers/ConcurrentRefHashMap.java b/platform/util/src/com/intellij/util/containers/ConcurrentRefHashMap.java
index 32a101f9e76e..d56b5153fdfb 100644
--- a/platform/util/src/com/intellij/util/containers/ConcurrentRefHashMap.java
+++ b/platform/util/src/com/intellij/util/containers/ConcurrentRefHashMap.java
@@ -319,7 +319,7 @@ abstract class ConcurrentRefHashMap<K, V> extends AbstractMap<K, V> implements C
     @Override
     public int size() {
       int j = 0;
-      for (Iterator i = iterator(); i.hasNext(); i.next()) j++;
+      for (Iterator<Entry<K, V>> i = iterator(); i.hasNext(); i.next()) j++;
       return j;
     }
 
diff --git a/platform/util/src/com/intellij/util/containers/RefHashMap.java b/platform/util/src/com/intellij/util/containers/RefHashMap.java
index 3cdc50132c34..096610482d84 100644
--- a/platform/util/src/com/intellij/util/containers/RefHashMap.java
+++ b/platform/util/src/com/intellij/util/containers/RefHashMap.java
@@ -356,7 +356,7 @@ abstract class RefHashMap<K, V> extends AbstractMap<K, V> implements Map<K, V> {
     @Override
     public int size() {
       int j = 0;
-      for (Iterator i = iterator(); i.hasNext(); i.next()) j++;
+      for (Iterator<Entry<K, V>> i = iterator(); i.hasNext(); i.next()) j++;
       return j;
     }