diff --git a/apps/document_signatures/managers.py b/apps/document_signatures/managers.py
index af967f30ca..af546ac520 100644
--- a/apps/document_signatures/managers.py
+++ b/apps/document_signatures/managers.py
@@ -24,7 +24,7 @@ class DocumentVersionSignatureManager(models.Manager):
         else:
             if document_signature.signature_file:
                 logger.debug('Existing detached signature')
-                document_signature.delete_detached_signature()
+                document_signature.delete_detached_signature_file()
                 document_signature.signature_file = None
                 document_signature.save()
 
diff --git a/apps/document_signatures/models.py b/apps/document_signatures/models.py
index 7ae215f675..e63b5a0396 100644
--- a/apps/document_signatures/models.py
+++ b/apps/document_signatures/models.py
@@ -23,7 +23,7 @@ class DocumentVersionSignature(models.Model):
 
     objects = DocumentVersionSignatureManager()
 
-    def delete_detached_signature(self):
+    def delete_detached_signature_file(self):
         self.signature_file.storage.delete(self.signature_file.path)
 
     def save(self, *args, **kwargs):