diff --git a/VERSIONS.txt b/VERSIONS.txt
index a2d2226..1c2ecc7 100644
--- a/VERSIONS.txt
+++ b/VERSIONS.txt
@@ -28,6 +28,8 @@ Changes
 
 * Added a `SpyException` base class for package-specific exceptions.
 
+* Added "raw" to the list of checked ENVI image data file extensions.
+
 Bug Fixes
 ---------
 
diff --git a/spectral/io/envi.py b/spectral/io/envi.py
index 58014d3..feaaa03 100644
--- a/spectral/io/envi.py
+++ b/spectral/io/envi.py
@@ -57,7 +57,7 @@
 
 # Known ENVI data file extensions. Upper and lower case versions will be
 # recognized, as well as interleaves ('bil', 'bip', 'bsq'), and no extension.
-KNOWN_EXTS = ['img', 'dat', 'sli', 'hyspex']
+KNOWN_EXTS = ['img', 'dat', 'sli', 'hyspex', 'raw']
 
 dtype_map = [('1', np.uint8),                   # unsigned byte
              ('2', np.int16),                   # 16-bit int