diff --git a/lib/report.js b/lib/report.js
index d3c8806d..92b86e2f 100644
--- a/lib/report.js
+++ b/lib/report.js
@@ -127,6 +127,15 @@ class Report {
         map.merge(converter.toIstanbul())
       }
     }
+
+    if (!this.all) {
+      for (const fileURL in map.data) {
+        if (!this.exclude.shouldInstrument(fileURL)) {
+          delete map.data[fileURL]
+        }
+      }
+    }
+
     this._allCoverageFiles = map
     return this._allCoverageFiles
   }
diff --git a/test/fixtures/bundle.js b/test/fixtures/bundle.js
new file mode 100644
index 00000000..76086096
--- /dev/null
+++ b/test/fixtures/bundle.js
@@ -0,0 +1,58 @@
+var __create = Object.create;
+var __defProp = Object.defineProperty;
+var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
+var __getOwnPropNames = Object.getOwnPropertyNames;
+var __getProtoOf = Object.getPrototypeOf;
+var __hasOwnProp = Object.prototype.hasOwnProperty;
+var __markAsModule = (target) => __defProp(target, "__esModule", { value: true });
+var __commonJS = (cb, mod) => function __require() {
+  return mod || (0, cb[__getOwnPropNames(cb)[0]])((mod = { exports: {} }).exports, mod), mod.exports;
+};
+var __reExport = (target, module2, copyDefault, desc) => {
+  if (module2 && typeof module2 === "object" || typeof module2 === "function") {
+    for (let key of __getOwnPropNames(module2))
+      if (!__hasOwnProp.call(target, key) && (copyDefault || key !== "default"))
+        __defProp(target, key, { get: () => module2[key], enumerable: !(desc = __getOwnPropDesc(module2, key)) || desc.enumerable });
+  }
+  return target;
+};
+var __toESM = (module2, isNodeMode) => {
+  return __reExport(__markAsModule(__defProp(module2 != null ? __create(__getProtoOf(module2)) : {}, "default", !isNodeMode && module2 && module2.__esModule ? { get: () => module2.default, enumerable: true } : { value: module2, enumerable: true })), module2);
+};
+
+// node_modules/path-exists/index.js
+var require_path_exists = __commonJS({
+  "node_modules/path-exists/index.js"(exports, module2) {
+    "use strict";
+    var fs = require("fs");
+    var { promisify } = require("util");
+    var pAccess = promisify(fs.access);
+    module2.exports = async (path) => {
+      try {
+        await pAccess(path);
+        return true;
+      } catch (_) {
+        return false;
+      }
+    };
+    module2.exports.sync = (path) => {
+      try {
+        fs.accessSync(path);
+        return true;
+      } catch (_) {
+        return false;
+      }
+    };
+  }
+});
+
+// index.js
+var { sync } = require_path_exists();
+try {
+  sync({
+    cwd: require.resolve("aaaa")
+  });
+} catch (err) {
+  console.log("reachable");
+}
+//# sourceMappingURL=bundle.js.map
diff --git a/test/fixtures/bundle.js.map b/test/fixtures/bundle.js.map
new file mode 100644
index 00000000..0e96fd13
--- /dev/null
+++ b/test/fixtures/bundle.js.map
@@ -0,0 +1,7 @@
+{
+  "version": 3,
+  "sources": ["node_modules/path-exists/index.js", "index.js"],
+  "sourcesContent": ["'use strict';\nconst fs = require('fs');\nconst {promisify} = require('util');\n\nconst pAccess = promisify(fs.access);\n\nmodule.exports = async path => {\n\ttry {\n\t\tawait pAccess(path);\n\t\treturn true;\n\t} catch (_) {\n\t\treturn false;\n\t}\n};\n\nmodule.exports.sync = path => {\n\ttry {\n\t\tfs.accessSync(path);\n\t\treturn true;\n\t} catch (_) {\n\t\treturn false;\n\t}\n};\n", "const {sync} = require('path-exists')\n\ntry {\n\tsync({\n\t\tcwd: require.resolve('aaaa')\n\t})\n} catch (err) {\n\tconsole.log('reachable')\n}\n"],
+  "mappings": ";;;;;;;;;;;;;;;;;;;;;;;AAAA;AAAA;AAAA;AACA,QAAM,KAAK,QAAQ;AACnB,QAAM,EAAC,cAAa,QAAQ;AAE5B,QAAM,UAAU,UAAU,GAAG;AAE7B,YAAO,UAAU,OAAM,SAAQ;AAC9B,UAAI;AACH,cAAM,QAAQ;AACd,eAAO;AAAA,eACC,GAAP;AACD,eAAO;AAAA;AAAA;AAIT,YAAO,QAAQ,OAAO,UAAQ;AAC7B,UAAI;AACH,WAAG,WAAW;AACd,eAAO;AAAA,eACC,GAAP;AACD,eAAO;AAAA;AAAA;AAAA;AAAA;;;ACpBT,IAAM,EAAC,SAAQ;AAEf,IAAI;AACH,OAAK;AAAA,IACJ,KAAqB;AAAA;AAAA,SAEd,KAAP;AACD,UAAQ,IAAI;AAAA;",
+  "names": []
+}
diff --git a/test/integration.js b/test/integration.js
index 2e06db34..19389326 100644
--- a/test/integration.js
+++ b/test/integration.js
@@ -646,4 +646,16 @@ describe('c8', () => {
       output.toString('utf8').should.matchSnapshot()
     })
   })
+
+  it('exclude unexpected file in result', () => {
+    const { output } = spawnSync(nodePath, [
+      c8Path,
+      '--exclude="test/*.js"',
+      '--temp-directory=tmp/bundle',
+      '--clean=false',
+      nodePath,
+      require.resolve('./fixtures/bundle.js')
+    ])
+    output.toString('utf8').should.matchSnapshot() 
+  })
 })
diff --git a/test/integration.js.snap b/test/integration.js.snap
index c3616a41..bcc25c02 100644
--- a/test/integration.js.snap
+++ b/test/integration.js.snap
@@ -330,6 +330,17 @@ All files   |      75 |       50 |     100 |      75 |
 ,"
 `;
 
+exports[`c8 exclude unexpected file in result 1`] = `
+",reachable
+----------|---------|----------|---------|---------|-------------------
+File      | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s 
+----------|---------|----------|---------|---------|-------------------
+All files |     100 |      100 |     100 |     100 |                   
+ index.js |     100 |      100 |     100 |     100 |                   
+----------|---------|----------|---------|---------|-------------------
+,"
+`;
+
 exports[`c8 merges reports from subprocesses together 1`] = `
 ",first