diff --git a/gdtf-spec.md b/gdtf-spec.md
index baf230c..5adda99 100644
--- a/gdtf-spec.md
+++ b/gdtf-spec.md
@@ -516,7 +516,7 @@ currently defined XML attributes of the wheel slot are specified in
| XML Attribute Name | Value Type | Description |
|----|----|----|
-| Name | [String](#user-content-attrtype-string ) | The unique name of the wheel slot |
+| Name | [String](#user-content-attrtype-string ) | The name of the wheel slot |
| Color | [ColorCIE](#user-content-attrtype-colorcie ) | Color of the wheel slot, Default value: {0.3127, 0.3290, 100.0 } (white) For Y give relative value compared to overall output defined in property Luminous Flux of related Beam Geometry (transmissive case). |
| Filter | [Node](#user-content-attrtype-node ) | Optional. Link to filter in the physical description; Do not define color if filter is used; Starting point: Filter Collect |
| MediaFileName | [Resource](#user-content-attrtype-resource ) | Optional. PNG file name without extension containing image for specific gobos etc.
- Maximum resolution of picture: 1024x1024
- Recommended resolution of gobo: 256x256
- Recommended resolution of animation wheel: 256x256
These resource files are located in a folder called `./wheels` in the zip archive. Default value: empty. |