diff --git a/src/lib/Query/Content/CriterionVisitor/IsContainer.php b/src/lib/Query/Content/CriterionVisitor/IsContainer.php
index c0fc550d..6aaf082e 100644
--- a/src/lib/Query/Content/CriterionVisitor/IsContainer.php
+++ b/src/lib/Query/Content/CriterionVisitor/IsContainer.php
@@ -22,7 +22,11 @@ public function visit(Criterion $criterion, CriterionVisitor $subVisitor = null)
         $value = $criterion->value;
 
         if (!is_array($value) || !is_bool($value[0])) {
-            throw new \LogicException('Criterion value should be of type array<bool>');
+            throw new \LogicException(sprintf(
+                '%s value should be of type array<bool>, received %s.',
+                Criterion\IsContainer::class,
+                get_debug_type($value),
+            ));
         }
 
         return 'content_type_is_container_b:' . ($value[0] ? 'true' : 'false');
diff --git a/src/lib/Query/Location/CriterionVisitor/IsContainer.php b/src/lib/Query/Location/CriterionVisitor/IsContainer.php
index a5eeafb3..50a45908 100644
--- a/src/lib/Query/Location/CriterionVisitor/IsContainer.php
+++ b/src/lib/Query/Location/CriterionVisitor/IsContainer.php
@@ -22,7 +22,11 @@ public function visit(Criterion $criterion, CriterionVisitor $subVisitor = null)
         $value = $criterion->value;
 
         if (!is_array($value) || !is_bool($value[0])) {
-            throw new \LogicException('Criterion value should be of type array<bool>');
+            throw new \LogicException(sprintf(
+                '%s value should be of type array<bool>, received %s.',
+                Criterion\IsContainer::class,
+                get_debug_type($value),
+            ));
         }
 
         return 'is_container_b:' . ($value[0] ? 'true' : 'false');