diff --git a/lib/getOptionsArray.js b/lib/getOptionsArray.js
index 4183a57..13360c3 100644
--- a/lib/getOptionsArray.js
+++ b/lib/getOptionsArray.js
@@ -26,6 +26,9 @@ const optionsSchema = {
         }
       ]
     },
+    replaceAll: {
+      type: 'boolean'
+    },
     flags: {
       type: 'string',
     },
@@ -39,6 +42,7 @@ const optionsSchema = {
 const defaultOptions = {
   search: null,
   replace: null,
+  replaceAll: false,
   flags: null,
   strict: false
 }
diff --git a/lib/replace.js b/lib/replace.js
index a8a144e..1216127 100644
--- a/lib/replace.js
+++ b/lib/replace.js
@@ -23,7 +23,9 @@ function replace (source, options, context) {
     throw new Error('Replace failed (strict mode) : options.search and options.replace are required')
   }
 
-  const newSource = source.replace(search, replace)
+  const newSource = options.replaceAll
+    ? source.replaceAll(search, replace)
+    : source.replace(search, replace)
 
   if (strict && (newSource === source)) {
     throw new Error('Replace failed (strict mode) : ' + options.search + ' → ' + options.replace)
diff --git a/test/index.test.js b/test/index.test.js
index d87b7b7..9bcf9ce 100644
--- a/test/index.test.js
+++ b/test/index.test.js
@@ -354,4 +354,53 @@ describe('Webpack replace loader ...', () => {
       }
     )
   })
+
+  it('should replace only one occurrence', done => {
+    webpack(getTestWebPackConfig(
+      {
+        test: /\.js$/,
+        loader: '__this-loader',
+        options: {
+          search: 'abcd',
+          replace: 'efhg'
+        }
+      }),
+      (error, stats) => {
+        expect(error).to.equal(null)
+
+        fs.readFile(outputFilePath, 'utf8', (error, contents) => {
+          expect(error).to.equal(null)
+          expect(contents).to.be.a('string')
+          expect(contents.match(/abcd/g)).to.have.lengthOf(1);
+          expect(contents.match(/efhg/g)).to.have.lengthOf(1);
+          done()
+        })
+      }
+    )
+  })
+
+  it('should replace all occurrences', done => {
+    webpack(getTestWebPackConfig(
+      {
+        test: /\.js$/,
+        loader: '__this-loader',
+        options: {
+          search: 'abcd',
+          replace: 'efgh',
+          replaceAll: true
+        }
+      }),
+      (error, stats) => {
+        expect(error).to.equal(null)
+
+        fs.readFile(outputFilePath, 'utf8', (error, contents) => {
+          expect(error).to.equal(null)
+          expect(contents).to.be.a('string')
+          expect(contents).not.to.include('abcd')
+          expect(contents.match(/efgh/g)).to.have.lengthOf(2);
+          done()
+        })
+      }
+    )
+  })
 })
diff --git a/test/source/entry.js b/test/source/entry.js
index 1e9bbd2..b76048c 100644
--- a/test/source/entry.js
+++ b/test/source/entry.js
@@ -3,3 +3,8 @@ var bar = require('./bar');
 var value = 'baz';
 
 console.log(foo + bar + value);
+
+var first = 'abcd';
+var second = 'abcd'
+
+console.log(first + second);