diff --git a/extension/src/language/goLanguageServer.ts b/extension/src/language/goLanguageServer.ts
index b446e8c..5923aa8 100644
--- a/extension/src/language/goLanguageServer.ts
+++ b/extension/src/language/goLanguageServer.ts
@@ -565,7 +565,7 @@
 						}
 						const res = await next(command, args);
 
-						const progressToken = <ProgressToken>res.Token;
+						const progressToken = res?.Token as ProgressToken;
 						// The progressToken from executeCommand indicates that
 						// gopls may trigger a related workDoneProgress
 						// notification, either before or after the command