diff --git a/src/cmd-buildextend-live b/src/cmd-buildextend-live
index 572eff5653..aab3230663 100755
--- a/src/cmd-buildextend-live
+++ b/src/cmd-buildextend-live
@@ -410,7 +410,7 @@ def generate_iso():
             print(f'{srcfile} -> {dstfile}')
 
     if karg_embed_area_length > 0:
-        assert(karg_embed_area_length > len(cmdline))
+        assert (karg_embed_area_length > len(cmdline))
         kargs_json.update(
             size=karg_embed_area_length,
             default=cmdline.strip(),