diff --git a/src/chrome/chromeDebugAdapter.ts b/src/chrome/chromeDebugAdapter.ts
index 59eb4a114..42adfafed 100644
--- a/src/chrome/chromeDebugAdapter.ts
+++ b/src/chrome/chromeDebugAdapter.ts
@@ -281,7 +281,8 @@ export abstract class ChromeDebugAdapter implements IDebugAdapter {
                 .then(e => {
                     this.hookConnectionEvents();
                     if (this._launchAttachArgs.experimentalLibraryCode) {
-                        this.chrome.Debugger.setBlackboxPatterns({ patterns: this._launchAttachArgs.experimentalLibraryCode });
+                        const patterns = this._launchAttachArgs.experimentalLibraryCode.map(glob => utils.pathGlobToBlackboxedRegex(glob));
+                        this.chrome.Debugger.setBlackboxPatterns({ patterns });
                     }
 
                     return Promise.all(this.runConnection());
diff --git a/src/utils.ts b/src/utils.ts
index f0ea7a9f3..885195360 100644
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -445,8 +445,22 @@ export function pathToRegex(aPath: string): string {
     return aPath;
 }
 
+export function pathGlobToBlackboxedRegex(glob: string): string {
+    return escapeRegexSpecialCharsForBlackbox(glob)
+        .replace(/\*\*/g, '.*') // ** -> .*
+        .replace(/([^\.]|^)\*/g, '$1.*') // * -> .*
+
+        // Just to simplify
+        .replace(/\.\*\\\/\.\*/g, '.*') // .*\/.* -> .*
+        .replace(/\.\*\.\*/g, '.*'); // .*.* -> .*
+}
+
 function escapeRegexSpecialChars(str: string): string {
-    return str.replace(/([/\\.?*()^${}|[\]])/g, '\\$1');
+    return str.replace(/([/\\.?*()^${}|[\]+])/g, '\\$1');
+}
+
+function escapeRegexSpecialCharsForBlackbox(str: string): string {
+    return str.replace(/([/\\.?()^${}|[\]+])/g, '\\$1');
 }
 
 export function trimLastNewline(msg: string): string {
diff --git a/test/utils.test.ts b/test/utils.test.ts
index a7975b236..b9ba24d68 100644
--- a/test/utils.test.ts
+++ b/test/utils.test.ts
@@ -286,4 +286,30 @@ suite('Utils', () => {
             testPathToRegex('file:///c:\\a\\b.js', 'file:\\/\\/\\/[Cc]:\\\\a\\\\b\\.js');
         });
     });
+
+    suite('pathGlobToRegex', () => {
+        function testPathGlobToBlackboxedScript(glob: string, expected: string): void {
+            assert.equal(getUtils().pathGlobToBlackboxedRegex(glob), expected);
+        }
+
+        test('universal', () => {
+            testPathGlobToBlackboxedScript('*', '.*');
+        });
+
+        test('url', () => {
+            testPathGlobToBlackboxedScript('http://localhost:8080/node_modules/**/*.js', 'http:\\/\\/localhost:8080\\/node_modules\\/.*\\.js');
+        });
+
+        test('path segment', () => {
+            testPathGlobToBlackboxedScript('node_modules', 'node_modules');
+        });
+
+        test('file extension', () => {
+            testPathGlobToBlackboxedScript('*.foo.bar', '.*\\.foo\\.bar');
+        });
+
+        test('escapes special chars except asterisk', () => {
+            testPathGlobToBlackboxedScript('*.+\\[(', '.*\\.\\+\\\\\\[\\(');
+        });
+    });
 });