diff --git a/src/net/azib/ipscan/gui/GUI.java b/src/net/azib/ipscan/gui/GUI.java
index bbe682aa..26efc5d7 100644
--- a/src/net/azib/ipscan/gui/GUI.java
+++ b/src/net/azib/ipscan/gui/GUI.java
@@ -70,17 +70,17 @@ public class GUI implements AutoCloseable {
 			Class os = Class.forName("org.eclipse.swt.internal.cocoa.OS");
 			Boolean isDarkMode = (Boolean) os.getMethod("isSystemDarkAppearance").invoke(null);
 			Boolean isAppDarkAppearance = (Boolean) os.getMethod("isAppDarkAppearance").invoke(null);
-			System.err.println("Dark appearance flags before: " + isDarkMode + ", " + isAppDarkAppearance);
+			LOG.info("Dark appearance flags before: " + isDarkMode + ", " + isAppDarkAppearance);
 			if (isDarkMode && !isAppDarkAppearance) {
 				os.getMethod("setTheme", boolean.class).invoke(null, isDarkMode);
 				isDarkMode = (Boolean) os.getMethod("isSystemDarkAppearance").invoke(null);
 				isAppDarkAppearance = (Boolean) os.getMethod("isAppDarkAppearance").invoke(null);
-				System.err.println("Dark appearance flags after: " + isDarkMode + ", " + isAppDarkAppearance);
+				LOG.info("Dark appearance flags after: " + isDarkMode + ", " + isAppDarkAppearance);
 				// workaround for a bug in SWT: colors need to be reinited after changing the appearance
 				Method initColors = display.getClass().getDeclaredMethod("initColors");
 				initColors.setAccessible(true);
 				initColors.invoke(display);
-				System.err.println("initColors called");
+				LOG.info("initColors called");
 			}
 		}
 		catch (Exception e) {