diff --git a/platform/diff-impl/src/com/intellij/diff/util/DiffDrawUtil.java b/platform/diff-impl/src/com/intellij/diff/util/DiffDrawUtil.java
index 78d33fc87a51..d5d2212adbc5 100644
--- a/platform/diff-impl/src/com/intellij/diff/util/DiffDrawUtil.java
+++ b/platform/diff-impl/src/com/intellij/diff/util/DiffDrawUtil.java
@@ -222,6 +222,7 @@ public class DiffDrawUtil {
   @NotNull
   private static LineSeparatorRenderer createDiffLineRenderer(@NotNull final Editor editor,
                                                               @NotNull final TextDiffType type,
+                                                              @NotNull SeparatorPlacement placement,
                                                               final boolean doubleLine,
                                                               final boolean resolved) {
     return new LineSeparatorRenderer() {
@@ -230,6 +231,7 @@ public class DiffDrawUtil {
         // TODO: change LineSeparatorRenderer interface ?
         Rectangle clip = g.getClipBounds();
         x2 = clip.x + clip.width;
+        if (placement == SeparatorPlacement.TOP) y++;
         drawChunkBorderLine((Graphics2D)g, x1, x2, y, type.getColor(editor), doubleLine, resolved);
       }
     };
@@ -504,7 +506,7 @@ public class DiffDrawUtil {
     @NotNull
     public LineMarkerBuilder withDefaultRenderer(boolean doubleLine) {
       assert type != null;
-      this.renderer = createDiffLineRenderer(editor, type, doubleLine, resolved);
+      this.renderer = createDiffLineRenderer(editor, type, placement, doubleLine, resolved);
       return this;
     }
 
diff --git a/platform/diff-impl/src/com/intellij/diff/util/DiffLineMarkerRenderer.java b/platform/diff-impl/src/com/intellij/diff/util/DiffLineMarkerRenderer.java
index 0f4022972f66..32f4d854231c 100644
--- a/platform/diff-impl/src/com/intellij/diff/util/DiffLineMarkerRenderer.java
+++ b/platform/diff-impl/src/com/intellij/diff/util/DiffLineMarkerRenderer.java
@@ -102,7 +102,7 @@ class DiffLineMarkerRenderer implements LineMarkerRendererEx {
         g2.setColor(ignoredBackgroundColor ? myDiffType.getIgnoredColor(editor) : color);
         g2.fillRect(x1, y1, x2 - x1, y2 - y1);
       } else {
-        DiffDrawUtil.drawChunkBorderLine(g2, x1, x2, y1 - 1, color, false, myResolved);
+        DiffDrawUtil.drawChunkBorderLine(g2, x1, x2, y1, color, false, myResolved);
         DiffDrawUtil.drawChunkBorderLine(g2, x1, x2, y2 - 1, color, false, myResolved);
       }
     }