diff --git a/NEWS.md b/NEWS.md
index 16b093555..70377ccde 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -16,6 +16,8 @@
   its validity right before starting to mux/adding to the job queue. Before it
   tried to force that into something valid, often resulting in unintentional
   paths (such as "C:\users\…\DC\files\…"). Fixes #2527.
+* mkvinfo: when using the `--size` option, mkvinfo will now report the
+  correctly if an element has an unknown size. Part of the fix of #2530.
 
 
 # Version 32.0.0 "Astral Progressions" 2019-03-12
diff --git a/src/common/kax_info.cpp b/src/common/kax_info.cpp
index ff7b86b08..49163c239 100644
--- a/src/common/kax_info.cpp
+++ b/src/common/kax_info.cpp
@@ -296,7 +296,7 @@ kax_info_c::create_text_representation(EbmlElement &e) {
       text += ": "s + value;
   }
 
-  return create_element_text(text, e.GetElementPosition(), e.HeadSize() + e.GetSize(), e.GetSize());
+  return create_element_text(text, e.GetElementPosition(), e.IsFiniteSize() ? e.HeadSize() + e.GetSize() : -2, e.IsFiniteSize() ? boost::optional<int64_t>{e.GetSize()} : boost::optional<int64_t>{});
 }
 
 std::string