1 files changed, 3 insertions, 2 deletions

diff --git a/meta/lib/oe/copy_buildsystem.py b/meta/lib/oe/copy_buildsystem.py
index eddf5bb2da..b5f546f99f 100644
--- a/meta/lib/oe/copy_buildsystem.py
+++ b/meta/lib/oe/copy_buildsystem.py
@@ -145,7 +145,7 @@ def prune_lockedsigs(excluded_tasks, excluded_targets, lockedsigs, pruned_output
                     invalue = True
                     f.write(line)
 
-def merge_lockedsigs(copy_tasks, lockedsigs_main, lockedsigs_extra, merged_output, copy_output):
+def merge_lockedsigs(copy_tasks, lockedsigs_main, lockedsigs_extra, merged_output, copy_output=None):
     merged = {}
     arch_order = []
     with open(lockedsigs_main, 'r') as f:
@@ -195,7 +195,8 @@ def merge_lockedsigs(copy_tasks, lockedsigs_main, lockedsigs_extra, merged_outpu
                     fulltypes.append(typename)
             f.write('SIGGEN_LOCKEDSIGS_TYPES = "%s"\n' % ' '.join(fulltypes))
 
-    write_sigs_file(copy_output, list(tocopy.keys()), tocopy)
+    if copy_output:
+        write_sigs_file(copy_output, list(tocopy.keys()), tocopy)
     if merged_output:
         write_sigs_file(merged_output, arch_order, merged)