diff --git a/src/vs/base/common/observableInternal/utils.ts b/src/vs/base/common/observableInternal/utils.ts
index b7fb965c1bf..de572e9dbfb 100644
--- a/src/vs/base/common/observableInternal/utils.ts
+++ b/src/vs/base/common/observableInternal/utils.ts
@@ -614,6 +614,6 @@ export function latestChangedValue<T extends IObservable<any>[]>(owner: DebugOwn
  * However, if the value is not undefined, it is cached and will not be recomputed anymore.
  * In that case, the derived will unsubscribe from its dependencies.
 */
-export function getIfDefined<T>(owner: DebugOwner, fn: (reader: IReader) => T): IObservable<T | undefined> {
+export function derivedConstOnceDefined<T>(owner: DebugOwner, fn: (reader: IReader) => T): IObservable<T | undefined> {
 	return derivedObservableWithCache<T | undefined>(owner, (reader, lastValue) => lastValue ?? fn(reader));
 }
diff --git a/src/vs/editor/browser/widget/diffEditor/diffEditorOptions.ts b/src/vs/editor/browser/widget/diffEditor/diffEditorOptions.ts
index 2f5d221b76c..270a6444ff2 100644
--- a/src/vs/editor/browser/widget/diffEditor/diffEditorOptions.ts
+++ b/src/vs/editor/browser/widget/diffEditor/diffEditorOptions.ts
@@ -4,7 +4,7 @@
  *--------------------------------------------------------------------------------------------*/
 
 import { IObservable, ISettableObservable, derived, observableFromEvent, observableValue } from 'vs/base/common/observable';
-import { getIfDefined } from 'vs/base/common/observableInternal/utils';
+import { derivedConstOnceDefined } from 'vs/base/common/observableInternal/utils';
 import { Constants } from 'vs/base/common/uint';
 import { allowsTrueInlineDiffRendering } from 'vs/editor/browser/widget/diffEditor/components/diffEditorViewZones/diffEditorViewZones';
 import { DiffEditorViewModel, DiffState } from 'vs/editor/browser/widget/diffEditor/diffEditorViewModel';
@@ -95,7 +95,7 @@ export class DiffEditorOptions {
 	}
 
 	private readonly shouldRenderInlineViewInSmartMode = this._model
-		.map(this, model => getIfDefined(this, reader => {
+		.map(this, model => derivedConstOnceDefined(this, reader => {
 			const diffs = model?.diff.read(reader);
 			return diffs ? isSimpleDiff(diffs, this.useTrueInlineDiffRendering.read(reader)) : undefined;
 		}))