diff --git a/src/tbf_ul.h b/src/tbf_ul.h
index 0b9be28..9396633 100644
--- a/src/tbf_ul.h
+++ b/src/tbf_ul.h
@@ -87,6 +87,8 @@
 	void set_window_size();
 	void update_coding_scheme_counter_ul(enum CodingScheme cs);
         void usf_timeout();
+	void contention_resolution_start();
+	void contention_resolution_success();
 
 	/* Please note that all variables here will be reset when changing
 	 * from WAIT RELEASE back to FLOW state (re-use of TBF).