diff --git a/src/pcu_main.cpp b/src/pcu_main.cpp
index 4f23dd7..041831f6 100644
--- a/src/pcu_main.cpp
+++ b/src/pcu_main.cpp
@@ -248,6 +248,8 @@
 
 	pcu_l1if_close();
 
+	flush_timing_advance();
+
 	talloc_free(gprs_rlcmac_bts);
 
 	talloc_report_full(tall_pcu_ctx, stderr);