diff --git a/NIST/fingerprint/functions.py b/NIST/fingerprint/functions.py
index 048a5c3644b3a5d1502dfcb54cb09a773a02e5f5..c19a0856e580672c6480e243637df4b9842df0de 100644
--- a/NIST/fingerprint/functions.py
+++ b/NIST/fingerprint/functions.py
@@ -224,6 +224,9 @@ def changeFormatImage( input, outformat, **options ):
             buff = StringIO( input )
             img = Image.open( buff )
             
+            if img.format in [ "TGA" ]:
+                raise Exception
+        
         except:
             if string_to_hex( input[ 0 : 4 ] ) in [ "FFA0FFA4", "FFA0FFA5", "FFA0FFA6", "FFA0FFA2", "FFA0FFA8" ]:
                 img = RAWToPIL( WSQ().decode( input ), **options )