diff --git a/src/bts.cpp b/src/bts.cpp
index 818530b0..43098c1f 100644
--- a/src/bts.cpp
+++ b/src/bts.cpp
@@ -57,6 +57,7 @@ static const struct rate_ctr_desc bts_ctr_description[] = {
 	{ "rlc.sent",			"RLC Sent             "},
 	{ "rlc.resent",			"RLC Resent           "},
 	{ "rlc.stalled",		"RLC Stalled          "},
+	{ "rlc.nacked",			"RLC Nacked           "},
 	{ "decode.errors",		"Decode Errors        "},
 	{ "sba.allocated",		"SBA Allocated        "},
 	{ "sba.freed",			"SBA Freed            "},
diff --git a/src/bts.h b/src/bts.h
index 178be3d8..a28d6be8 100644
--- a/src/bts.h
+++ b/src/bts.h
@@ -161,6 +161,7 @@ public:
 		CTR_RLC_SENT,
 		CTR_RLC_RESENT,
 		CTR_RLC_STALLED,
+		CTR_RLC_NACKED,
 		CTR_DECODE_ERRORS,
 		CTR_SBA_ALLOCATED,
 		CTR_SBA_FREED,
@@ -210,6 +211,7 @@ public:
 	void rlc_sent();
 	void rlc_resent();
 	void rlc_stalled();
+	void rlc_nacked();
 	void decode_error();
 	void sba_allocated();
 	void sba_freed();
@@ -276,6 +278,7 @@ CREATE_COUNT_INLINE(tbf_reused, CTR_TBF_REUSED)
 CREATE_COUNT_INLINE(rlc_sent, CTR_RLC_SENT)
 CREATE_COUNT_INLINE(rlc_resent, CTR_RLC_RESENT)
 CREATE_COUNT_INLINE(rlc_stalled, CTR_RLC_STALLED)
+CREATE_COUNT_INLINE(rlc_nacked, CTR_RLC_NACKED)
 CREATE_COUNT_INLINE(decode_error, CTR_DECODE_ERRORS)
 CREATE_COUNT_INLINE(sba_allocated, CTR_SBA_ALLOCATED)
 CREATE_COUNT_INLINE(sba_freed, CTR_SBA_FREED)
diff --git a/src/tbf.cpp b/src/tbf.cpp
index 0226691f..19a0d819 100644
--- a/src/tbf.cpp
+++ b/src/tbf.cpp
@@ -1471,6 +1471,7 @@ int gprs_rlcmac_tbf::snd_dl_ack(uint8_t final, uint8_t ssn, uint8_t *rbb)
 				LOGP(DRLCMACDL, LOGL_DEBUG, "- got "
 					"NACK for BSN=%d\n", bsn);
 				dir.dl.v_b[bsn & mod_sns_half] = 'N';
+				bts->rlc_nacked();
 				lost++;
 			}
 		}