diff --git a/app/scodoc/sco_exceptions.py b/app/scodoc/sco_exceptions.py
index dd872a7a..5f64f57b 100644
--- a/app/scodoc/sco_exceptions.py
+++ b/app/scodoc/sco_exceptions.py
@@ -36,10 +36,6 @@ class ScoException(Exception):
     pass
 
 
-class InvalidEtudId(NoteProcessError):
-    pass
-
-
 class InvalidNoteValue(ScoException):
     pass
 
@@ -56,6 +52,10 @@ class NoteProcessError(ScoValueError):
     pass
 
 
+class InvalidEtudId(NoteProcessError):
+    pass
+
+
 class ScoFormatError(ScoValueError):
     pass