diff --git a/CHANGELOG.md b/CHANGELOG.md
index 47da870e..9d6bca82 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -12,6 +12,7 @@ FlatLaf Change Log
 
 - Fixed missing UI value `MenuItem.acceleratorDelimiter` on macOS. (was `null`,
   is now an empty string)
+- Fixed possible exception in `FlatUIUtils.resetRenderingHints()`. (issue #575)
 
 
 ## 2.4
diff --git a/flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatUIUtils.java b/flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatUIUtils.java
index fd3ddea2..53440bcc 100644
--- a/flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatUIUtils.java
+++ b/flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatUIUtils.java
@@ -352,8 +352,10 @@ public class FlatUIUtils
 	 */
 	public static void resetRenderingHints( Graphics g, Object[] oldRenderingHints ) {
 		Graphics2D g2 = (Graphics2D) g;
-		g2.setRenderingHint( RenderingHints.KEY_ANTIALIASING, oldRenderingHints[0] );
-		g2.setRenderingHint( RenderingHints.KEY_STROKE_CONTROL, oldRenderingHints[1] );
+		if( oldRenderingHints[0] != null )
+			g2.setRenderingHint( RenderingHints.KEY_ANTIALIASING, oldRenderingHints[0] );
+		if( oldRenderingHints[1] != null )
+			g2.setRenderingHint( RenderingHints.KEY_STROKE_CONTROL, oldRenderingHints[1] );
 	}
 
 	/**