diff --git a/src/ukify/ukify.py b/src/ukify/ukify.py
index f1db9ba578..76437f25e5 100755
--- a/src/ukify/ukify.py
+++ b/src/ukify/ukify.py
@@ -1636,7 +1636,7 @@ def finalize_options(opts):
     elif len(opts.positional) == 1 and opts.positional[0] in VERBS:
         opts.verb = opts.positional[0]
     elif opts.linux or opts.initrd:
-        raise ValueError('--linux/--initrd options cannot be used with positional arguments')
+        raise ValueError('--linux=/--initrd= options cannot be used with positional arguments')
     else:
         print("Assuming obsolete command line syntax with no verb. Please use 'build'.")
         if opts.positional: