instrumentation
diff --git a/skeletons/per_encoder.c b/skeletons/per_encoder.c
index 960981a..f4bace0 100644
--- a/skeletons/per_encoder.c
+++ b/skeletons/per_encoder.c
@@ -88,6 +88,7 @@
 		}
 	default:
 		*buffer_r = key.buffer;
+		ASN_DEBUG("Complete encoded in %d bits", er.encoded);
 		return ((er.encoded + 7) >> 3);
 	}
 }