diff --git a/test/unit/migrations/034-test.js b/test/unit/migrations/034-test.js
new file mode 100644
index 000000000000..1777d60676ed
--- /dev/null
+++ b/test/unit/migrations/034-test.js
@@ -0,0 +1,123 @@
+const assert = require('assert')
+const migration34 = require('../../../app/scripts/migrations/034')
+
+describe('migration #34', () => {
+  it('should update the version metadata', (done) => {
+    const oldStorage = {
+      'meta': {
+        'version': 33,
+      },
+      'data': {},
+    }
+
+    migration34.migrate(oldStorage)
+      .then((newStorage) => {
+        assert.deepEqual(newStorage.meta, {
+          'version': 34,
+        })
+        done()
+      })
+      .catch(done)
+  })
+
+  it('should set migratedPrivacyMode & privacyMode if featureFlags.privacyMode was false', (done) => {
+    const oldStorage = {
+      'meta': {},
+      'data': {
+        'PreferencesController': {
+          'featureFlags': {
+            'privacyMode': false,
+          },
+        },
+      },
+    }
+
+    migration34.migrate(oldStorage)
+      .then((newStorage) => {
+        assert.deepEqual(newStorage.data.PreferencesController, {
+          'migratedPrivacyMode': true,
+          'featureFlags': {
+            'privacyMode': true,
+          },
+        })
+        done()
+      })
+      .catch(done)
+  })
+
+  it('should NOT change any state if migratedPrivacyMode is already set to true', (done) => {
+    const oldStorage = {
+      'meta': {},
+      'data': {
+        'PreferencesController': {
+          'migratedPrivacyMode': true,
+          'featureFlags': {
+            'privacyMode': true,
+          },
+        },
+      },
+    }
+
+    migration34.migrate(oldStorage)
+      .then((newStorage) => {
+        assert.deepEqual(newStorage.data, oldStorage.data)
+        done()
+      })
+      .catch(done)
+  })
+
+  it('should NOT change any state if migratedPrivacyMode is already set to false', (done) => {
+    const oldStorage = {
+      'meta': {},
+      'data': {
+        'PreferencesController': {
+          'migratedPrivacyMode': false,
+          'featureFlags': {
+            'privacyMode': true,
+          },
+        },
+      },
+    }
+
+    migration34.migrate(oldStorage)
+      .then((newStorage) => {
+        assert.deepEqual(newStorage.data, oldStorage.data)
+        done()
+      })
+      .catch(done)
+  })
+
+  it('should NOT change any state if PreferencesController is missing', (done) => {
+    const oldStorage = {
+      'meta': {},
+      'data': {},
+    }
+
+    migration34.migrate(oldStorage)
+      .then((newStorage) => {
+        assert.deepEqual(newStorage.data, oldStorage.data)
+        done()
+      })
+      .catch(done)
+  })
+
+  it('should NOT change any state if featureFlags.privacyMode is already true', (done) => {
+    const oldStorage = {
+      'meta': {},
+      'data': {
+        'PreferencesController': {
+          'featureFlags': {
+            'privacyMode': true,
+          },
+        },
+      },
+    }
+
+    migration34.migrate(oldStorage)
+      .then((newStorage) => {
+        assert.deepEqual(newStorage.data, oldStorage.data)
+        done()
+      })
+      .catch(done)
+  })
+})