diff --git a/src/extension.ts b/src/extension.ts
index cbca018..ac5a1b3 100644
--- a/src/extension.ts
+++ b/src/extension.ts
@@ -230,7 +230,11 @@ export async function activate(context: ExtensionContext): Promise<PythonEnviron
             updateViewsAndStatus(statusBar, workspaceView, managerView, api);
         }),
         onDidChangeTerminalShellIntegration(async (e) => {
-            const envVar = e.shellIntegration?.env.value;
+            const shellEnv = e.shellIntegration?.env;
+            if (!shellEnv) {
+                return;
+            }
+            const envVar = shellEnv.value;
             if (envVar) {
                 if (envVar['VIRTUAL_ENV']) {
                     const env = await api.resolveEnvironment(Uri.file(envVar['VIRTUAL_ENV']));