diff --git a/channels/chan_dahdi.c b/channels/chan_dahdi.c
index 6d740d0..ecd8165 100644
--- a/channels/chan_dahdi.c
+++ b/channels/chan_dahdi.c
@@ -8841,7 +8841,7 @@ static int my_dahdi_write(struct dahdi_pvt *p, unsigned char *buf, int len, int
 		res = write(fd, buf, size);
 		if (res != size) {
 			ast_debug(1, "Write returned %d (%s) on channel %d\n", res, strerror(errno), p->channel);
-			return sent;
+			return -1;
 		}
 		len -= size;
 		buf += size;
@@ -8924,7 +8924,8 @@ static int dahdi_write(struct ast_channel *ast, struct ast_frame *frame)
 	}
 	ast_mutex_unlock(&p->lock);
 	if (res < 0) {
-		ast_log(LOG_WARNING, "write failed: %s\n", strerror(errno));
+		ast_log(LOG_WARNING, "DAHDI channel %d write failed: %s\n",
+			p->channel, strerror(errno));
 		return -1;
 	}
 	return 0;