diff --git a/skeletons/BOOLEAN.h b/skeletons/BOOLEAN.h
index 1cf1980..217d0f1 100644
--- a/skeletons/BOOLEAN.h
+++ b/skeletons/BOOLEAN.h
@@ -27,6 +27,7 @@
 xer_type_decoder_f BOOLEAN_decode_xer;
 xer_type_encoder_f BOOLEAN_encode_xer;
 per_type_decoder_f BOOLEAN_decode_uper;
+per_type_encoder_f BOOLEAN_encode_uper;
 
 #ifdef __cplusplus
 }