diff --git a/libs/exceptions.py b/libs/exceptions.py
index cc493c2..d388ce7 100644
--- a/libs/exceptions.py
+++ b/libs/exceptions.py
@@ -9,3 +9,7 @@ class FingerprintWrite(Exception):
 class FingerprintIndexWrite(Exception):
   """Error creating an index file"""
   pass
+
+class FingerprintMD5(Exception):
+  """Error creating an MD5 sum"""
+  pass