diff --git a/lib/Alchemy/Phrasea/SearchEngine/Elastic/AST/KeyValue/EqualExpression.php b/lib/Alchemy/Phrasea/SearchEngine/Elastic/AST/KeyValue/EqualExpression.php
index 827147a1e0..06eb68cc24 100644
--- a/lib/Alchemy/Phrasea/SearchEngine/Elastic/AST/KeyValue/EqualExpression.php
+++ b/lib/Alchemy/Phrasea/SearchEngine/Elastic/AST/KeyValue/EqualExpression.php
@@ -24,7 +24,7 @@ class EqualExpression extends Node
     public function buildQuery(QueryContext $context)
     {
         if (!$this->key->isValueCompatible($this->value, $context)) {
-            throw new QueryException(sprintf('Value "%s" for metadata tag "%s" is not valid.', $this->value, $this->key));
+            throw new QueryException(sprintf('Value "%s" for key "%s" is not valid.', $this->value, $this->key));
         }
 
         $query = [
diff --git a/lib/Alchemy/Phrasea/SearchEngine/Elastic/AST/KeyValue/MatchExpression.php b/lib/Alchemy/Phrasea/SearchEngine/Elastic/AST/KeyValue/MatchExpression.php
index 89043ca310..c37320650e 100644
--- a/lib/Alchemy/Phrasea/SearchEngine/Elastic/AST/KeyValue/MatchExpression.php
+++ b/lib/Alchemy/Phrasea/SearchEngine/Elastic/AST/KeyValue/MatchExpression.php
@@ -22,7 +22,7 @@ class MatchExpression extends Node
     public function buildQuery(QueryContext $context)
     {
         if (!$this->key->isValueCompatible($this->value, $context)) {
-            throw new QueryException(sprintf('Value "%s" for metadata tag "%s" is not valid.', $this->value, $this->key));
+            throw new QueryException(sprintf('Value "%s" for key "%s" is not valid.', $this->value, $this->key));
         }
 
         return [
diff --git a/lib/Alchemy/Phrasea/SearchEngine/Elastic/AST/KeyValue/RangeExpression.php b/lib/Alchemy/Phrasea/SearchEngine/Elastic/AST/KeyValue/RangeExpression.php
index c81b7631b8..af6951a2ab 100644
--- a/lib/Alchemy/Phrasea/SearchEngine/Elastic/AST/KeyValue/RangeExpression.php
+++ b/lib/Alchemy/Phrasea/SearchEngine/Elastic/AST/KeyValue/RangeExpression.php
@@ -84,7 +84,7 @@ class RangeExpression extends Node
     private function assertValueCompatible($value, QueryContext $context)
     {
         if (!$this->key->isValueCompatible($value, $context)) {
-            throw new QueryException(sprintf('Value "%s" for metadata tag "%s" is not valid.', $value, $this->key));
+            throw new QueryException(sprintf('Value "%s" for key "%s" is not valid.', $value, $this->key));
         }
     }