diff --git a/source/blender/blenkernel/BKE_attribute.hh b/source/blender/blenkernel/BKE_attribute.hh
index 7c2c238fb0d..379b7b99e8b 100644
--- a/source/blender/blenkernel/BKE_attribute.hh
+++ b/source/blender/blenkernel/BKE_attribute.hh
@@ -587,6 +587,7 @@ class AttributeAccessor {
 
   /**
    * Run the provided function for every attribute.
+   * Attributes should not be removed or added during iteration.
    */
   bool for_all(const AttributeForeachCallback fn) const
   {