diff --git a/platform/diff-impl/src/com/intellij/diff/tools/util/ThreeDiffSplitter.java b/platform/diff-impl/src/com/intellij/diff/tools/util/ThreeDiffSplitter.java
index 04582d33dbc3..16403ac9467e 100644
--- a/platform/diff-impl/src/com/intellij/diff/tools/util/ThreeDiffSplitter.java
+++ b/platform/diff-impl/src/com/intellij/diff/tools/util/ThreeDiffSplitter.java
@@ -18,6 +18,7 @@ package com.intellij.diff.tools.util;
 import com.intellij.diff.tools.util.DiffSplitter.Painter;
 import com.intellij.diff.util.Side;
 import com.intellij.util.containers.ContainerUtil;
+import com.intellij.util.ui.JBUI;
 import org.jetbrains.annotations.CalledInAwt;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
@@ -91,7 +92,7 @@ public class ThreeDiffSplitter extends JPanel {
     @Nullable private Painter myPainter;
 
     public Dimension getPreferredSize() {
-      return new Dimension(30, 1);
+      return JBUI.size(30, 1);
     }
 
     public void paint(Graphics g) {
diff --git a/platform/diff-impl/src/com/intellij/openapi/diff/impl/dir/DirDiffFrame.java b/platform/diff-impl/src/com/intellij/openapi/diff/impl/dir/DirDiffFrame.java
index 1e196c68e285..8821eccffd16 100644
--- a/platform/diff-impl/src/com/intellij/openapi/diff/impl/dir/DirDiffFrame.java
+++ b/platform/diff-impl/src/com/intellij/openapi/diff/impl/dir/DirDiffFrame.java
@@ -21,10 +21,9 @@ import com.intellij.openapi.actionSystem.PlatformDataKeys;
 import com.intellij.openapi.project.Project;
 import com.intellij.openapi.ui.FrameWrapper;
 import com.intellij.openapi.util.Disposer;
+import com.intellij.util.ui.JBUI;
 import org.jetbrains.annotations.NonNls;
 
-import java.awt.*;
-
 /**
  * @author Konstantin Bulenkov
  */
@@ -33,7 +32,7 @@ public class DirDiffFrame extends FrameWrapper {
 
   public DirDiffFrame(Project project, DirDiffTableModel model) {
     super(project, "DirDiffDialog");
-    setSize(new Dimension(800, 600));
+    setSize(JBUI.size(800, 600));
     setTitle(model.getTitle());
     myPanel = new DirDiffPanel(model, new DirDiffWindow(this));
     Disposer.register(this, myPanel);