diff --git a/bitbake/lib/bb/siggen.py b/bitbake/lib/bb/siggen.py
index 8861337b92..dece945969 100644
--- a/bitbake/lib/bb/siggen.py
+++ b/bitbake/lib/bb/siggen.py
@@ -24,7 +24,7 @@ def init(d):
             break
     else:
         logger.error("Invalid signature generator '%s', using default 'noop'\n"
-                     "Available generators: %s",
+                     "Available generators: %s", desired,
                      ', '.join(obj.name for obj in siggens))
         return SignatureGenerator(d)