diff --git a/src/vs/editor/common/config/editorOptions.ts b/src/vs/editor/common/config/editorOptions.ts
index e149ea0793c..941502e43d3 100644
--- a/src/vs/editor/common/config/editorOptions.ts
+++ b/src/vs/editor/common/config/editorOptions.ts
@@ -2146,7 +2146,8 @@ class EditorMinimap extends BaseEditorOption<EditorOption.minimap, EditorMinimap
 					default: defaults.scale,
 					minimum: 1,
 					maximum: 3,
-					description: nls.localize('minimap.scale', "Scale of content drawn in the minimap.")
+					enum: [1, 2, 3],
+					description: nls.localize('minimap.scale', "Scale of content drawn in the minimap: 1, 2 or 3.")
 				},
 				'editor.minimap.renderCharacters': {
 					type: 'boolean',