diff --git a/src/rougail/annotator.py b/src/rougail/annotator.py
index dc94d6462..5d529bf27 100644
--- a/src/rougail/annotator.py
+++ b/src/rougail/annotator.py
@@ -1064,7 +1064,8 @@ class ConstraintAnnotator:
             fill = fills[idx]
             # test if it's redefined calculation
             if fill.target in targets and not fill.redefine:
-                raise DictConsistencyError(_(f"A fill already exists for the target: {fill.target}"))
+                xmlfiles = self.objectspace.display_xmlfiles(fill.xmlfiles)
+                raise DictConsistencyError(_(f'A fill already exists for the target of "{fill.target}" created in {xmlfiles}'))
             targets.append(fill.target)
             #
             if fill.name not in self.functions:
diff --git a/src/rougail/objspace.py b/src/rougail/objspace.py
index ea83a7cc2..eccf50e47 100644
--- a/src/rougail/objspace.py
+++ b/src/rougail/objspace.py
@@ -323,8 +323,7 @@ class CreoleObjSpace:
                          ) -> str:
         if len(xmlfiles) == 1:
             return '"' + xmlfiles[0] + '"'
-        else:
-            return '"' + '", "'.join(xmlfiles[:-1]) + '"' + ' and ' + '"' + xmlfiles[-1] + '"'
+        return '"' + '", "'.join(xmlfiles[:-1]) + '"' + ' and ' + '"' + xmlfiles[-1] + '"'
 
     def create_tree_structure(self,
                               space,
diff --git a/tests/dictionaries/80redefine_double_error/00-base.xml b/tests/dictionaries/80redefine_double_error/00-base.xml
new file mode 100644
index 000000000..c973121f3
--- /dev/null
+++ b/tests/dictionaries/80redefine_double_error/00-base.xml
@@ -0,0 +1,22 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<rougail>
+
+    <services/>
+
+    <variables>
+        <family name="general">
+            <variable name="mode_conteneur_actif" type="oui/non" description="Redefine description" hidden="True">
+                <value>non</value>
+            </variable>
+        </family>
+        <separators/>
+    </variables>
+
+    <constraints>
+    </constraints>
+
+    <help/>
+
+</rougail>
+<!-- vim: ts=4 sw=4 expandtab
+-->
diff --git a/tests/dictionaries/80redefine_double_error/01-base.xml b/tests/dictionaries/80redefine_double_error/01-base.xml
new file mode 100644
index 000000000..8a75dbe3d
--- /dev/null
+++ b/tests/dictionaries/80redefine_double_error/01-base.xml
@@ -0,0 +1,10 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<rougail>
+    <variables>
+        <family name="general">
+            <variable name="mode_conteneur_actif" redefine="True"/>
+        </family>
+    </variables>
+</rougail>
+<!-- vim: ts=4 sw=4 expandtab
+-->
diff --git a/tests/dictionaries/80redefine_double_error/02-base.xml b/tests/dictionaries/80redefine_double_error/02-base.xml
new file mode 100644
index 000000000..fb649e931
--- /dev/null
+++ b/tests/dictionaries/80redefine_double_error/02-base.xml
@@ -0,0 +1,10 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<rougail>
+    <variables>
+        <family name="general">
+            <variable name="mode_conteneur_actif" redefine="True" type="string"/>
+        </family>
+    </variables>
+</rougail>
+<!-- vim: ts=4 sw=4 expandtab
+-->
diff --git a/tests/dictionaries/80redefine_double_error/__init__.py b/tests/dictionaries/80redefine_double_error/__init__.py
new file mode 100644
index 000000000..e69de29bb
diff --git a/tests/test_1_flattener.py b/tests/test_1_flattener.py
index 2b7251211..15b6be2bb 100644
--- a/tests/test_1_flattener.py
+++ b/tests/test_1_flattener.py
@@ -29,7 +29,8 @@ excludes = set([])
 test_ok -= excludes
 test_raise -= excludes
 #test_ok = ['40condition_base_add']
-#test_raise = []
+#test_ok = []
+#test_raise = ['80redefine_double_error']
 
 ORI_DIR = getcwd()