diff --git a/guix/scripts/package.scm b/guix/scripts/package.scm
index 12517340624f84201c2afceb56f8192f5dfbe23e..06ee4417995274224d8b4ae9e5f49a2024c79008 100644
--- a/guix/scripts/package.scm
+++ b/guix/scripts/package.scm
@@ -440,7 +440,8 @@ (define (show-help)
   (display (_ "
       --roll-back        roll back to the previous generation"))
   (display (_ "
-      --search-paths     display needed environment variable definitions"))
+      --search-paths[=KIND]
+                         display needed environment variable definitions"))
   (display (_ "
   -l, --list-generations[=PATTERN]
                          list generations matching PATTERN"))