diff --git a/plugins/axiomcode/skills/axiomcode/scripts/axiomcode-impact b/plugins/axiomcode/skills/axiomcode/scripts/axiomcode-impact
index ebf4d9da3..62e97a540 100755
--- a/plugins/axiomcode/skills/axiomcode/scripts/axiomcode-impact
+++ b/plugins/axiomcode/skills/axiomcode/scripts/axiomcode-impact
@@ -270,7 +270,12 @@ class Impact:
         Resolution matches a declaration by its TRAILING segments, so `zzzz.qqqq.Owner.member`
         and the true fully-qualified spelling are indistinguishable once matched: both come back
         as `Owner.member`. Comparing the typed string against every qualified_name and display a
-        candidate carries is what tells a real package apart from one that is not in the graph."""
+        candidate carries is what tells a real package apart from one that is not in the graph.
+
+        A file:line is not a dotted name: its dots are the file's (`user.controller.js:7`), and the
+        resolver already matched that path against the index, so there is no prefix left to check."""
+        m = re.match(r'^(.+?):(\d+)$', typed.strip().strip('`"\''))
+        if m and ('/' in m.group(1) or '.' in m.group(1)): return ''
         typed = re.sub(r'\(.*\)$', '', typed).replace('#', '.').strip('.')
         if typed.count('.') < 2: return ''          # Owner.member carries no prefix to validate
         names = []
diff --git a/tests/cases/javascript/fileline-dotted-basename/case.json b/tests/cases/javascript/fileline-dotted-basename/case.json
new file mode 100644
index 000000000..4bcedc31f
--- /dev/null
+++ b/tests/cases/javascript/fileline-dotted-basename/case.json
@@ -0,0 +1,18 @@
+{"lang": "javascript", "src": "src",
+ "checks": [
+  {"why": "a file:line whose basename carries an extra dot (order.service.js) is the declaration at that line, not package 'order' + 'service.js'",
+   "run": ["impact", "src/services/order.service.js:3"],
+   "want": ["change: placeOrder (at src/services/order.service.js:3)", "createOrder"],
+   "avoid": ["matches no package"]},
+  {"why": "the same in a controllers directory (user.controller.js)",
+   "run": ["impact", "src/controllers/user.controller.js:4"],
+   "want": ["change: createOrder (at src/controllers/user.controller.js:4)"],
+   "avoid": ["matches no package"]},
+  {"why": "control: an undotted basename answers as before",
+   "run": ["impact", "src/services/userService.js:2"],
+   "want": ["change: findUser (at src/services/userService.js:2)", "placeOrder"],
+   "avoid": ["matches no package"]},
+  {"why": "control: a dotted basename under a directory the index does not have is still refused",
+   "run": ["impact", "zzz/order.service.js:3"],
+   "expect_error": true,
+   "want": ["no callable spans zzz/order.service.js:3"]}]}
diff --git a/tests/cases/javascript/fileline-dotted-basename/src/controllers/user.controller.js b/tests/cases/javascript/fileline-dotted-basename/src/controllers/user.controller.js
new file mode 100644
index 000000000..1bcd133f7
--- /dev/null
+++ b/tests/cases/javascript/fileline-dotted-basename/src/controllers/user.controller.js
@@ -0,0 +1,7 @@
+const { placeOrder } = require('../services/order.service');
+
+function createOrder(req, res) {
+  res.json(placeOrder(req.params.id, req.body));
+}
+
+module.exports = { createOrder };
diff --git a/tests/cases/javascript/fileline-dotted-basename/src/services/order.service.js b/tests/cases/javascript/fileline-dotted-basename/src/services/order.service.js
new file mode 100644
index 000000000..fe0e1688b
--- /dev/null
+++ b/tests/cases/javascript/fileline-dotted-basename/src/services/order.service.js
@@ -0,0 +1,6 @@
+const { findUser } = require('./userService');
+function placeOrder(userId, item) {
+  const user = findUser(userId);
+  return { user, item };
+}
+module.exports = { placeOrder };
diff --git a/tests/cases/javascript/fileline-dotted-basename/src/services/userService.js b/tests/cases/javascript/fileline-dotted-basename/src/services/userService.js
new file mode 100644
index 000000000..70b9d91b5
--- /dev/null
+++ b/tests/cases/javascript/fileline-dotted-basename/src/services/userService.js
@@ -0,0 +1,4 @@
+function findUser(id) {
+  return { id };
+}
+module.exports = { findUser };
diff --git a/tests/cases/typescript/fileline-dotted-basename/case.json b/tests/cases/typescript/fileline-dotted-basename/case.json
new file mode 100644
index 000000000..d282220f8
--- /dev/null
+++ b/tests/cases/typescript/fileline-dotted-basename/case.json
@@ -0,0 +1,18 @@
+{"lang": "typescript", "src": "src",
+ "checks": [
+  {"why": "a file:line in a NestJS/Angular-style file (user.service.ts) is the declaration at that line, not package 'user' + 'service.ts'",
+   "run": ["impact", "src/user.service.ts:3"],
+   "want": ["change: UserService.find (at src/user.service.ts:3)", "UserController.get"],
+   "avoid": ["matches no package"]},
+  {"why": "the same for user.controller.ts",
+   "run": ["impact", "src/user.controller.ts:7"],
+   "want": ["change: UserController.get (at src/user.controller.ts:7)"],
+   "avoid": ["matches no package"]},
+  {"why": "control: an undotted basename answers as before",
+   "run": ["impact", "src/userHelper.ts:2"],
+   "want": ["change: helper (at src/userHelper.ts:2)"],
+   "avoid": ["matches no package"]},
+  {"why": "control: a dotted NAME with a fabricated prefix is still refused by the prefix check",
+   "run": ["impact", "zzz.qqq.UserService.find"],
+   "expect_error": true,
+   "want": ["'zzz.qqq' matches no package"]}]}
diff --git a/tests/cases/typescript/fileline-dotted-basename/src/user.controller.ts b/tests/cases/typescript/fileline-dotted-basename/src/user.controller.ts
new file mode 100644
index 000000000..36210904d
--- /dev/null
+++ b/tests/cases/typescript/fileline-dotted-basename/src/user.controller.ts
@@ -0,0 +1,9 @@
+import { UserService } from './user.service';
+
+export class UserController {
+  constructor(private readonly users: UserService) {}
+
+  get(id: string): string {
+    return this.users.find(id);
+  }
+}
diff --git a/tests/cases/typescript/fileline-dotted-basename/src/user.service.ts b/tests/cases/typescript/fileline-dotted-basename/src/user.service.ts
new file mode 100644
index 000000000..26a54b707
--- /dev/null
+++ b/tests/cases/typescript/fileline-dotted-basename/src/user.service.ts
@@ -0,0 +1,5 @@
+export class UserService {
+  find(id: string): string {
+    return id;
+  }
+}
diff --git a/tests/cases/typescript/fileline-dotted-basename/src/userHelper.ts b/tests/cases/typescript/fileline-dotted-basename/src/userHelper.ts
new file mode 100644
index 000000000..3bf28b37d
--- /dev/null
+++ b/tests/cases/typescript/fileline-dotted-basename/src/userHelper.ts
@@ -0,0 +1,3 @@
+export function helper(id: string): string {
+  return id;
+}