diff --git a/flags.qrc b/flags.qrc
index dd7c70fa..1d322768 100644
--- a/flags.qrc
+++ b/flags.qrc
@@ -254,6 +254,7 @@
         <file>flags/en.png</file>
         <file>flags/uk.png</file>
         <file>flags/eo.png</file>
+        <file>flags/jb.png</file>
         <file>flags/other.png</file>
     </qresource>
 </RCC>
diff --git a/flags/00readme.txt b/flags/00readme.txt
index 738e3ee2..4c944768 100644
--- a/flags/00readme.txt
+++ b/flags/00readme.txt
@@ -4,3 +4,7 @@ Licensed under the following conditions:
 
 "These flag icons are available for free use for any purpose with no
 requirement for attribution."
+
+The Lojban flag was adapted from
+https://commons.wikimedia.org/wiki/File:Lojban_logo.svg, which is in the
+public domain.
diff --git a/flags/jb.png b/flags/jb.png
new file mode 100644
index 00000000..f8cf316b
Binary files /dev/null and b/flags/jb.png differ
diff --git a/language.cc b/language.cc
index 357470e8..5fdfc439 100644
--- a/language.cc
+++ b/language.cc
@@ -291,6 +291,7 @@ Db::Db()
   iso2ToCountry[ "iu" ] = "ca";
   iso2ToCountry[ "iw" ] = "il";
   iso2ToCountry[ "ja" ] = "jp";
+  iso2ToCountry[ "jb" ] = "jb";
   iso2ToCountry[ "ka" ] = "ge";
   iso2ToCountry[ "kk" ] = "kz";
   iso2ToCountry[ "kl" ] = "gl";