diff --git a/lib/intercept.js b/lib/intercept.js
index cf266d5a5..bcc1319ce 100644
--- a/lib/intercept.js
+++ b/lib/intercept.js
@@ -350,7 +350,8 @@ function interceptorScopes() {
   const nestedInterceptors = Object.values(allInterceptors).map(
     i => i.interceptors,
   )
-  return [].concat(...nestedInterceptors).map(i => i.scope)
+  const scopes = new Set([].concat(...nestedInterceptors).map(i => i.scope))
+  return [...scopes]
 }
 
 function isDone() {
diff --git a/tests/got/test_nock_lifecycle.js b/tests/got/test_nock_lifecycle.js
index 92a07efe8..622f3076b 100644
--- a/tests/got/test_nock_lifecycle.js
+++ b/tests/got/test_nock_lifecycle.js
@@ -163,6 +163,22 @@ describe('Nock lifecycle functions', () => {
       await got('http://example.test/')
       expect(nock.activeMocks()).to.be.empty()
     })
+
+    it("activeMocks doesn't return duplicate mocks", () => {
+      nock('http://example.test')
+        .get('/')
+        .reply()
+        .get('/second')
+        .reply()
+        .get('/third')
+        .reply()
+
+      expect(nock.activeMocks()).to.deep.equal([
+        'GET http://example.test:80/',
+        'GET http://example.test:80/second',
+        'GET http://example.test:80/third',
+      ])
+    })
   })
 
   describe('resetting nock catastrophically while a request is in progress', () => {