diff --git a/src/cli.ts b/src/cli.ts
index a6c6902e..3c48e6a5 100644
--- a/src/cli.ts
+++ b/src/cli.ts
@@ -179,7 +179,7 @@ commander
   .command('plantuml <srcPath> <plantumlserver>')
   .option(
     '--definitions <definitions>',
-    'Shows these specific definitions (class or enum)',
+    'Shows these specific definitions (class, interface or enum)',
     toArray,
   )
   .option('--showAssociations', 'Shows associations of classes')