internal: More doc clarification
diff --git a/src/sdeventplus/internal/sdref.hpp b/src/sdeventplus/internal/sdref.hpp
index bc3a950..a05eca2 100644
--- a/src/sdeventplus/internal/sdref.hpp
+++ b/src/sdeventplus/internal/sdref.hpp
@@ -35,6 +35,8 @@
/** @brief Constructs a new reference holder
* Does not take a new reference on the passed ref
+ * NOTE: This will still take a reference during future copies
+ * Useful for first creation of an object reference
*
* @param[in] ref - Object which is referenced
* @param[in] take_ref - Function used to take references