diff --git a/configuration/items.md b/configuration/items.md
index 95add9d97..4c5ede806 100644
--- a/configuration/items.md
+++ b/configuration/items.md
@@ -318,11 +318,10 @@ The following guidelines apply to user-added icon files:
 
 - Only `png` or `svg` file formats may be used
 - Icon filenames may include lowercase letters, numbers and underscores (`_`)
-- Uppercase letters and special characters are prohibited
-- Hyphens (`-`) are reserved for [Dynamic Icons](#dynamic-icons) (see below)
+- Hyphens (`-`) are reserved for [Dynamic Icons](#dynamic-icons)
 - Example filenames:
-  - Good: `myswitch.svg`, `power_meter.png`, `error23.svg`
-  - Bad: `PC-Display.svg`, `power-meter.png`, `tür⇔.svg`
+  - Good: `myswitch.svg`, `power_meter.png`, `tuer23.svg`
+  - Bad: `MySwitch.svg`, `power-meter.png`, `tür23.svg`
 
 **Bitmaps or Vector Graphics:**
 openHAB can work with either Bitmap (`png`) or Vector (`svg`) icon files.