diff --git a/src/cli.c b/src/cli.c
index c414382..5d9528b 100644
--- a/src/cli.c
+++ b/src/cli.c
@@ -781,13 +781,14 @@
 static int cli_output_msg(struct channel *chn, const char *msg, int severity, int severity_output)
 {
 	struct buffer *tmp;
-
-	if (likely(severity_output == CLI_SEVERITY_NONE))
-		return ci_putblk(chn, msg, strlen(msg));
+	struct ist imsg;
 
 	tmp = get_trash_chunk();
 	chunk_reset(tmp);
 
+	if (likely(severity_output == CLI_SEVERITY_NONE))
+		goto send_it;
+
 	if (severity < 0 || severity > 7) {
 		ha_warning("socket command feedback with invalid severity %d", severity);
 		chunk_printf(tmp, "[%d]: ", severity);
@@ -804,7 +805,17 @@
 				ha_warning("Unrecognized severity output %d", severity_output);
 		}
 	}
-	chunk_appendf(tmp, "%s", msg);
+ send_it:
+	/* the vast majority of messages have their trailing LF but a few are
+	 * still missing it, and very rare ones might even have two. For this
+	 * reason, we'll first delete the trailing LFs if present, then
+	 * systematically append one.
+	 */
+	for (imsg = ist(msg); imsg.len > 0 && imsg.ptr[imsg.len - 1] == '\n'; imsg.len--)
+		;
+
+	chunk_istcat(tmp, imsg);
+	chunk_istcat(tmp, ist("\n"));
 
 	return ci_putblk(chn, tmp->area, strlen(tmp->area));
 }