diff --git a/packages/plugin-ext/src/plugin/node/debug/debug.ts b/packages/plugin-ext/src/plugin/node/debug/debug.ts
index 152e6f4bca588..28d700bf95cb2 100644
--- a/packages/plugin-ext/src/plugin/node/debug/debug.ts
+++ b/packages/plugin-ext/src/plugin/node/debug/debug.ts
@@ -233,6 +233,7 @@ export class DebugExtImpl implements DebugExt {
         const session = this.sessions.get(sessionId);
         if (session) {
             this.onDidTerminateDebugSessionEmitter.fire(session);
+            this.sessions.delete(sessionId);
         }
     }
 
@@ -322,7 +323,6 @@ export class DebugExtImpl implements DebugExt {
         const debugAdapterSession = this.sessions.get(sessionId);
         if (debugAdapterSession) {
             await debugAdapterSession.stop();
-            this.sessions.delete(sessionId);
         }
     }