diff --git a/src/vs/editor/common/config/editorOptions.ts b/src/vs/editor/common/config/editorOptions.ts
index 73c30dd221b4fb3dffc059cbf0bc4445793cf277..adf546ac92b29472346f9171be5d444afb73b509 100644
--- a/src/vs/editor/common/config/editorOptions.ts
+++ b/src/vs/editor/common/config/editorOptions.ts
@@ -624,9 +624,6 @@ export class ConfigurationChangedEvent {
 	constructor(values: boolean[]) {
 		this._values = values;
 	}
-	/**
-	 * @internal
-	 */
 	public hasChanged(id: EditorOption): boolean {
 		return this._values[id];
 	}
diff --git a/src/vs/monaco.d.ts b/src/vs/monaco.d.ts
index ad9ede1dca1d0740286770540d8a49790c94c96d..a683a9b8e2fff9fa75b7ac4591a3b6c324301889 100644
--- a/src/vs/monaco.d.ts
+++ b/src/vs/monaco.d.ts
@@ -3089,6 +3089,7 @@ declare namespace monaco.editor {
 	 * An event describing that the configuration of the editor has changed.
 	 */
 	export class ConfigurationChangedEvent {
+		hasChanged(id: EditorOption): boolean;
 	}
 
 	/**