diff --git a/src/gprs_ms.c b/src/gprs_ms.c
index c072b0a..37071e4 100644
--- a/src/gprs_ms.c
+++ b/src/gprs_ms.c
@@ -99,7 +99,7 @@
 
 	LOGPTBFDL(dl_tbf, LOGL_DEBUG, "LLC receive timeout, requesting DL ACK\n");
 
-	tbf_dl_request_dl_ack(dl_tbf);
+	dl_tbf_request_dl_ack(dl_tbf);
 }
 
 static int ms_talloc_destructor(struct GprsMs *ms);
diff --git a/src/tbf_dl.cpp b/src/tbf_dl.cpp
index 856dae6..0e6b922 100644
--- a/src/tbf_dl.cpp
+++ b/src/tbf_dl.cpp
@@ -1027,7 +1027,7 @@
 	m_dl_ack_requested = true;
 }
 
-void tbf_dl_request_dl_ack(struct gprs_rlcmac_dl_tbf *dl_tbf) {
+void dl_tbf_request_dl_ack(struct gprs_rlcmac_dl_tbf *dl_tbf) {
 	dl_tbf->request_dl_ack();
 }
 
diff --git a/src/tbf_dl.h b/src/tbf_dl.h
index ba5d582..bfe9068 100644
--- a/src/tbf_dl.h
+++ b/src/tbf_dl.h
@@ -139,7 +139,7 @@
 
 void dl_tbf_trigger_ass_on_pacch(struct gprs_rlcmac_dl_tbf *tbf, struct gprs_rlcmac_tbf *old_tbf);
 void dl_tbf_trigger_ass_on_pch(struct gprs_rlcmac_dl_tbf *tbf);
-void tbf_dl_request_dl_ack(struct gprs_rlcmac_dl_tbf *tbf);
+void dl_tbf_request_dl_ack(struct gprs_rlcmac_dl_tbf *tbf);
 
 static inline struct gprs_rlcmac_tbf *dl_tbf_as_tbf(struct gprs_rlcmac_dl_tbf *dl_tbf)
 {