diff --git a/src/libosmo-legacy-mgcp/mgcp_protocol.c b/src/libosmo-legacy-mgcp/mgcp_protocol.c
index d2df5f7..4e82233 100644
--- a/src/libosmo-legacy-mgcp/mgcp_protocol.c
+++ b/src/libosmo-legacy-mgcp/mgcp_protocol.c
@@ -1588,24 +1588,26 @@
 	msg += nchars;
 	size -= nchars;
 
-	/* Error Counter */
-	nchars = snprintf(msg, size,
-			  "\r\nX-Osmo-CP: EC TIS=%u, TOS=%u, TIR=%u, TOR=%u",
-			  endp->net_state.in_stream.err_ts_counter,
-			  endp->net_state.out_stream.err_ts_counter,
-			  endp->bts_state.in_stream.err_ts_counter,
-			  endp->bts_state.out_stream.err_ts_counter);
-	if (nchars < 0 || nchars >= size)
-		goto truncate;
+	if (endp->cfg->osmux != OSMUX_USAGE_OFF) {
+		/* Error Counter */
+		nchars = snprintf(msg, size,
+				  "\r\nX-Osmo-CP: EC TIS=%u, TOS=%u, TIR=%u, TOR=%u",
+				  endp->net_state.in_stream.err_ts_counter,
+				  endp->net_state.out_stream.err_ts_counter,
+				  endp->bts_state.in_stream.err_ts_counter,
+				  endp->bts_state.out_stream.err_ts_counter);
+		if (nchars < 0 || nchars >= size)
+			goto truncate;
 
-	msg += nchars;
-	size -= nchars;
+		msg += nchars;
+		size -= nchars;
 
-	if (endp->osmux.state == OSMUX_STATE_ENABLED) {
-		snprintf(msg, size,
-			 "\r\nX-Osmux-ST: CR=%u, BR=%u",
-			 endp->osmux.stats.chunks,
-			 endp->osmux.stats.octets);
+		if (endp->osmux.state == OSMUX_STATE_ENABLED) {
+			snprintf(msg, size,
+				 "\r\nX-Osmux-ST: CR=%u, BR=%u",
+				 endp->osmux.stats.chunks,
+				 endp->osmux.stats.octets);
+		}
 	}
 truncate:
 	msg[size - 1] = '\0';
diff --git a/tests/legacy_mgcp/mgcp_test.c b/tests/legacy_mgcp/mgcp_test.c
index a540b5f..1a4513e 100644
--- a/tests/legacy_mgcp/mgcp_test.c
+++ b/tests/legacy_mgcp/mgcp_test.c
@@ -268,7 +268,9 @@
 		 "C: 2\r\n"
 
 #define DLCX_RET "250 7 OK\r\n"			\
-		 "P: PS=0, OS=0, PR=0, OR=0, PL=0, JI=0\r\n" \
+		 "P: PS=0, OS=0, PR=0, OR=0, PL=0, JI=0\r\n"
+
+ #define DLCX_RET_OSMUX DLCX_RET                 \
 		 "X-Osmo-CP: EC TIS=0, TOS=0, TIR=0, TOR=0\r\n"
 
 #define RQNT	 "RQNT 186908780 1@mgw MGCP 1.0\r\n"	\