diff --git a/gnu/packages/video.scm b/gnu/packages/video.scm
index 2db16b179a..fa3aa0e8f0 100644
--- a/gnu/packages/video.scm
+++ b/gnu/packages/video.scm
@@ -523,10 +523,10 @@ (define-public libmatroska
     (inputs
      `(("libebml" ,libebml)))
     (home-page "https://www.matroska.org")
-    (synopsis "C++ libary to parse Matroska files (.mkv and .mka)")
+    (synopsis "C++ library to parse Matroska files (.mkv and .mka)")
     (description
      "Matroska aims to become the standard of multimedia container formats.
-It is based on EBML (Extensible Binary Meta Language), a binary derivative
+It is based on @dfn{EBML} (Extensible Binary Meta Language), a binary derivative
 of XML.  EBML enables the Matroska Development Team to gain significant
 advantages in terms of future format extensibility, without breaking file
 support in old parsers.
diff --git a/gnu/packages/xml.scm b/gnu/packages/xml.scm
index eccef0d898..78ead8827c 100644
--- a/gnu/packages/xml.scm
+++ b/gnu/packages/xml.scm
@@ -103,10 +103,10 @@ (define-public libebml
          "005a0ipqnfbsq47zrc61zszi439jw32q5xd6dc1jyb3lc0zl266q"))))
     (build-system gnu-build-system)
     (home-page "https://matroska-org.github.io/libebml/")
-    (synopsis "C++ libary to parse EBML files")
-    (description "libebml is a C++ library to read and write EBML (Extensible
-Binary Meta Language) files.  EBML was designed to be a simplified binary
-extension of XML for the purpose of storing and manipulating data in a
+    (synopsis "C++ library to parse EBML files")
+    (description "libebml is a C++ library to read and write @dfn{EBML}
+(Extensible Binary Meta Language) files.  EBML was designed to be a simplified
+binary extension of XML for the purpose of storing and manipulating data in a
 hierarchical form with variable field lengths.")
     (license license:lgpl2.1)))