diff --git a/sachet/server/files/views.py b/sachet/server/files/views.py
index e17d8e8..33c7f90 100644
--- a/sachet/server/files/views.py
+++ b/sachet/server/files/views.py
@@ -122,7 +122,7 @@ class FileContentAPI(ModelAPI):
                 jsonify(
                     {
                         "status": "fail",
-                        "message": "Share must be initialized by its owner.",
+                        "message": "Share must be modified by its owner.",
                     }
                 ),
                 403,
diff --git a/tests/conftest.py b/tests/conftest.py
index 151c67b..328814a 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -75,7 +75,10 @@ def users(client):
         dave=dict(
             password="1234",
             permissions=Bitmask(
-                Permissions.CREATE, Permissions.READ, Permissions.DELETE
+                Permissions.CREATE,
+                Permissions.READ,
+                Permissions.DELETE,
+                Permissions.MODIFY,
             ),
         ),
         # admins don't have the other permissions by default,