diff --git a/src/Commands.ts b/src/Commands.ts
index 6cb3ef8..57731fe 100644
--- a/src/Commands.ts
+++ b/src/Commands.ts
@@ -1,5 +1,3 @@
-'use strict';
-
 import * as vsc from 'vscode';
 import * as ext from './Extension';
 import * as xpath from 'xpath';
diff --git a/src/Extension.ts b/src/Extension.ts
index 8570b99..74b4742 100644
--- a/src/Extension.ts
+++ b/src/Extension.ts
@@ -1,5 +1,3 @@
-'use strict';
-
 import * as vsc from 'vscode';
 import { TextEditorCommands } from './Commands';
 import { XmlFormattingEditProvider } from './providers/Formatting';
diff --git a/src/providers/Completion.ts b/src/providers/Completion.ts
index c969e7f..dad38d5 100644
--- a/src/providers/Completion.ts
+++ b/src/providers/Completion.ts
@@ -1,5 +1,3 @@
-'use strict';
-
 import * as vsc from 'vscode';
 import { XQueryCompleter, XQueryCompletionItem } from '../services/XQueryCompleter';
 
diff --git a/src/providers/Execution.ts b/src/providers/Execution.ts
index 389f6fe..559dea1 100644
--- a/src/providers/Execution.ts
+++ b/src/providers/Execution.ts
@@ -1,5 +1,3 @@
-'use strict';
-
 import * as vsc from 'vscode';
 import { ChildProcess } from '../services/ChildProcess';
 
diff --git a/src/providers/Formatting.ts b/src/providers/Formatting.ts
index b0756b5..bd3a900 100644
--- a/src/providers/Formatting.ts
+++ b/src/providers/Formatting.ts
@@ -1,5 +1,3 @@
-'use strict';
-
 import * as vsc from 'vscode';
 import { RangeUtil } from '../utils/RangeUtil';
 import { XmlFormatter, IXmlFormatterOptions } from '../services/XmlFormatter';
diff --git a/src/providers/Linting.ts b/src/providers/Linting.ts
index e2c755a..3f8992a 100644
--- a/src/providers/Linting.ts
+++ b/src/providers/Linting.ts
@@ -1,5 +1,3 @@
-'use strict';
-
 import * as vsc from 'vscode';
 import { XQueryLinter, XQueryDiagnostic } from '../services/XQueryLinter';
 
diff --git a/src/providers/XPath.ts b/src/providers/XPath.ts
index fd54e84..adca124 100644
--- a/src/providers/XPath.ts
+++ b/src/providers/XPath.ts
@@ -1,5 +1,3 @@
-'use strict';
-
 import * as vsc from 'vscode';
 import * as ext from '../Extension';
 import { XPathEvaluator, EvaluatorResult, EvaluatorResultType } from '../services/XPathEvaluator';
diff --git a/src/services/ChildProcess.ts b/src/services/ChildProcess.ts
index 1290a06..5af998e 100644
--- a/src/services/ChildProcess.ts
+++ b/src/services/ChildProcess.ts
@@ -1,5 +1,3 @@
-'use strict';
-
 let child_process = require('child_process');
 
 export class ChildProcess {
diff --git a/src/services/XPathEvaluator.ts b/src/services/XPathEvaluator.ts
index 50979b2..b7a1a54 100644
--- a/src/services/XPathEvaluator.ts
+++ b/src/services/XPathEvaluator.ts
@@ -1,5 +1,3 @@
-'use strict';
-
 import * as xpath from 'xpath';
 
 let DOMParser = require('xmldom').DOMParser;
diff --git a/src/services/XQueryCompleter.ts b/src/services/XQueryCompleter.ts
index fcaf029..8bc4467 100644
--- a/src/services/XQueryCompleter.ts
+++ b/src/services/XQueryCompleter.ts
@@ -1,5 +1,3 @@
-'use strict';
-
 let XQLint = require('xqlint').XQLint;
 
 export class XQueryCompleter {
diff --git a/src/services/XQueryLinter.ts b/src/services/XQueryLinter.ts
index ba7db16..30e5c8a 100644
--- a/src/services/XQueryLinter.ts
+++ b/src/services/XQueryLinter.ts
@@ -1,5 +1,3 @@
-'use strict';
-
 let XQLint = require('xqlint').XQLint;
 
 export class XQueryLinter {
diff --git a/src/services/XmlFormatter.ts b/src/services/XmlFormatter.ts
index 6f4e314..349e1f7 100644
--- a/src/services/XmlFormatter.ts
+++ b/src/services/XmlFormatter.ts
@@ -1,5 +1,3 @@
-'use strict';
-
 // Based on pretty-data (https://github.com/vkiryukhin/pretty-data)
 export class XmlFormatter {
     constructor(options?: IXmlFormatterOptions) {
diff --git a/src/utils/RangeUtil.ts b/src/utils/RangeUtil.ts
index 8200162..ebb3dc6 100644
--- a/src/utils/RangeUtil.ts
+++ b/src/utils/RangeUtil.ts
@@ -1,5 +1,3 @@
-'use strict';
-
 import * as vsc from 'vscode';
 
 export class RangeUtil {