diff --git a/HISTORY.rst b/HISTORY.rst
index 13f13ae..499b380 100644
--- a/HISTORY.rst
+++ b/HISTORY.rst
@@ -91,6 +91,7 @@ History
 - Added `High Resolution Audio` as new `audio_profile` possible value.
 - Added `Ultimate` as new `edition` possible value.
 - Added `Extended Surround` as new `audio_profile` possible value.
+- Added `EX` as new `audio_profile` possible value
 
 2.1.4 (2017-06-01)
 ------------------
diff --git a/docs/properties.rst b/docs/properties.rst
index e37b05d..9764617 100644
--- a/docs/properties.rst
+++ b/docs/properties.rst
@@ -196,7 +196,7 @@ Audio properties
 
   The codec profile used for audio.
 
-  - ``Extended Surround``, ``High Efficiency``, ``High Quality``, ``High Resolution Audio``, ``Low Complexity``,
+  - ``Extended Surround``, ``EX``, ``High Efficiency``, ``High Quality``, ``High Resolution Audio``, ``Low Complexity``,
     ``Master Audio``
 
 
diff --git a/guessit/rules/properties/audio_codec.py b/guessit/rules/properties/audio_codec.py
index aaf19ea..561d5fb 100644
--- a/guessit/rules/properties/audio_codec.py
+++ b/guessit/rules/properties/audio_codec.py
@@ -55,6 +55,7 @@ def audio_codec():
     rebulk.string('HE', value='High Efficiency', tags='AAC')
     rebulk.string('LC', value='Low Complexity', tags='AAC')
     rebulk.string('HQ', value='High Quality', tags='Dolby Digital')
+    rebulk.string('EX', value='EX', tags='Dolby Digital')
 
     rebulk.defaults(name="audio_channels")
     rebulk.regex(r'(7[\W_][01](?:ch)?)(?:[^\d]|$)', value='7.1', children=True)
diff --git a/guessit/test/movies.yml b/guessit/test/movies.yml
index 3b98b1e..38d9fa3 100644
--- a/guessit/test/movies.yml
+++ b/guessit/test/movies.yml
@@ -1390,3 +1390,26 @@
   video_codec: H.264
   release_group: PRoDJi
   type: movie
+
+? Title.2000.720p.BluRay.DDEX.x264-HDClub.mkv
+: title: Title
+  year: 2000
+  screen_size: 720p
+  source: Blu-ray
+  audio_codec: Dolby Digital
+  audio_profile: EX
+  video_codec: H.264
+  release_group: HDClub
+  container: mkv
+  type: movie
+
+? Jack Reacher Never Go Back 2016 720p Bluray DD-EX x264-BluPanther
+: title: Jack Reacher Never Go Back
+  year: 2016
+  screen_size: 720p
+  source: Blu-ray
+  audio_codec: Dolby Digital
+  audio_profile: EX
+  video_codec: H.264
+  release_group: BluPanther
+  type: movie
diff --git a/guessit/test/rules/audio_codec.yml b/guessit/test/rules/audio_codec.yml
index 593b3d0..7f3c784 100644
--- a/guessit/test/rules/audio_codec.yml
+++ b/guessit/test/rules/audio_codec.yml
@@ -110,3 +110,9 @@
 ? -ES
 : audio_codec: DTS
   audio_profile: Extended Surround
+
+? DD-EX
+? DDEX
+? -EX
+: audio_codec: Dolby Digital
+  audio_profile: EX