diff --git a/CHANGELOG.md b/CHANGELOG.md
index 58310336..3e137141 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,7 @@ FlatLaf Change Log
 ## Unreleased
 
 - Support using IntelliJ platform themes (.theme.json files).
+- Support `JFileChooser`. (issue #5)
 - Fixed selection background of checkbox in table cell.
 - Fixed jittery submenu rendering on Mac. (issue #10)
 
diff --git a/flatlaf-core/src/main/java/com/formdev/flatlaf/FlatLaf.java b/flatlaf-core/src/main/java/com/formdev/flatlaf/FlatLaf.java
index 53a8aebf..00050ea2 100644
--- a/flatlaf-core/src/main/java/com/formdev/flatlaf/FlatLaf.java
+++ b/flatlaf-core/src/main/java/com/formdev/flatlaf/FlatLaf.java
@@ -171,6 +171,9 @@ public abstract class FlatLaf
 	public UIDefaults getDefaults() {
 		UIDefaults defaults = getBase().getDefaults();
 
+		// add Metal resource bundle, which is required for FlatFileChooserUI
+		defaults.addResourceBundle( "com.sun.swing.internal.plaf.metal.resources.metal" );
+
 		// initialize some defaults (for overriding) that are used in basic UI delegates,
 		// but are not set in MetalLookAndFeel or BasicLookAndFeel
 		Color control = defaults.getColor( "control" );
diff --git a/flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatFileChooserUI.java b/flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatFileChooserUI.java
new file mode 100644
index 00000000..be83f016
--- /dev/null
+++ b/flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatFileChooserUI.java
@@ -0,0 +1,41 @@
+/*
+ * Copyright 2019 FormDev Software GmbH
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.formdev.flatlaf.ui;
+
+import javax.swing.JComponent;
+import javax.swing.JFileChooser;
+import javax.swing.plaf.ComponentUI;
+import javax.swing.plaf.metal.MetalFileChooserUI;
+
+/**
+ * Provides the Flat LaF UI delegate for {@link javax.swing.JFileChooser}.
+ *
+ * TODO document used UI defaults of superclass
+ *
+ * @author Karl Tauber
+ */
+public class FlatFileChooserUI
+	extends MetalFileChooserUI
+{
+	public static ComponentUI createUI( JComponent c ) {
+		return new FlatFileChooserUI( (JFileChooser) c );
+	}
+
+	public FlatFileChooserUI( JFileChooser filechooser ) {
+		super( filechooser );
+	}
+}
diff --git a/flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatTableHeaderUI.java b/flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatTableHeaderUI.java
index 7cf3b895..71d4d31f 100644
--- a/flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatTableHeaderUI.java
+++ b/flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatTableHeaderUI.java
@@ -81,8 +81,10 @@ public class FlatTableHeaderUI
 	@Override
 	public void paint( Graphics g, JComponent c ) {
 		// do not paint borders if JTableHeader.setDefaultRenderer() was used
-		boolean paintBorders = header.getDefaultRenderer().getClass().getName().equals(
-			"sun.swing.table.DefaultTableCellHeaderRenderer" );
+		String rendererClassName = header.getDefaultRenderer().getClass().getName();
+		boolean paintBorders =
+			rendererClassName.equals( "sun.swing.table.DefaultTableCellHeaderRenderer" ) ||
+			rendererClassName.equals( "sun.swing.FilePane$AlignableTableHeaderRenderer" );
 
 		if( paintBorders )
 			paintColumnBorders( g, c );
diff --git a/flatlaf-core/src/main/resources/com/formdev/flatlaf/FlatLaf.properties b/flatlaf-core/src/main/resources/com/formdev/flatlaf/FlatLaf.properties
index 37b069bf..6261d273 100644
--- a/flatlaf-core/src/main/resources/com/formdev/flatlaf/FlatLaf.properties
+++ b/flatlaf-core/src/main/resources/com/formdev/flatlaf/FlatLaf.properties
@@ -22,6 +22,7 @@ CheckBoxMenuItemUI=com.formdev.flatlaf.ui.FlatCheckBoxMenuItemUI
 ColorChooserUI=com.formdev.flatlaf.ui.FlatColorChooserUI
 ComboBoxUI=com.formdev.flatlaf.ui.FlatComboBoxUI
 EditorPaneUI=com.formdev.flatlaf.ui.FlatEditorPaneUI
+FileChooserUI=com.formdev.flatlaf.ui.FlatFileChooserUI
 FormattedTextFieldUI=com.formdev.flatlaf.ui.FlatFormattedTextFieldUI
 LabelUI=com.formdev.flatlaf.ui.FlatLabelUI
 ListUI=com.formdev.flatlaf.ui.FlatListUI
@@ -338,7 +339,7 @@ Table.selectionInactiveForeground=@selectionInactiveForeground
 #---- TableHeader ----
 
 TableHeader.height=25
-TableHeader.cellBorder=2,2,2,2
+TableHeader.cellBorder=2,3,2,3
 
 
 #---- TextArea ----