diff --git a/src/vs/workbench/api/electron-browser/mainThreadDiagnostics.ts b/src/vs/workbench/api/electron-browser/mainThreadDiagnostics.ts
index 5051aabba45677bc525b02540115431639352470..f91e284ea2a70c3d214007093d11c0b586f1e244 100644
--- a/src/vs/workbench/api/electron-browser/mainThreadDiagnostics.ts
+++ b/src/vs/workbench/api/electron-browser/mainThreadDiagnostics.ts
@@ -29,6 +29,13 @@ export class MainThreadDiagnostics implements MainThreadDiagnosticsShape {
 	$changeMany(owner: string, entries: [UriComponents, IMarkerData[]][]): void {
 		for (let entry of entries) {
 			let [uri, markers] = entry;
+			for (const marker of markers) {
+				if (marker.relatedInformation) {
+					for (const relatedInformation of marker.relatedInformation) {
+						relatedInformation.resource = URI.revive(relatedInformation.resource);
+					}
+				}
+			}
 			this._markerService.changeOne(owner, URI.revive(uri), markers);
 		}
 		this._activeOwners.add(owner);