diff --git a/src/pdch.h b/src/pdch.h
index 9405606..759d7f9 100644
--- a/src/pdch.h
+++ b/src/pdch.h
@@ -194,6 +194,7 @@
 void pdch_free_all_tbf(struct gprs_rlcmac_pdch *pdch);
 void pdch_disable(struct gprs_rlcmac_pdch *pdch);
 bool pdch_is_enabled(const struct gprs_rlcmac_pdch *pdch);
+bool pdch_is_full(const struct gprs_rlcmac_pdch *pdch);
 #ifdef __cplusplus
 }
 #endif