diff --git a/drivers/syslog/syslog_rpmsg.c b/drivers/syslog/syslog_rpmsg.c
index 63b58a27b9..d7b7ceeba9 100644
--- a/drivers/syslog/syslog_rpmsg.c
+++ b/drivers/syslog/syslog_rpmsg.c
@@ -242,7 +242,6 @@ static void syslog_rpmsg_addbuf(FAR struct syslog_rpmsg_s *priv,
 #if defined(CONFIG_ARCH_LOWPUTC)
       up_nputs(buffer, len);
 #endif
-
       priv->flush += len;
       return;
     }
@@ -389,13 +388,12 @@ int syslog_rpmsg_flush(FAR syslog_channel_t *channel)
       priv->flush = priv->tail;
     }
 
-  if (priv->flush < priv->head)
+  while (priv->flush < priv->head)
     {
-      size_t len = priv->head - priv->flush;
 #if defined(CONFIG_ARCH_LOWPUTC)
-      up_nputs(&priv->buffer[SYSLOG_RPMSG_FLUSHOFF(priv)], len);
+      up_putc(priv->buffer[SYSLOG_RPMSG_FLUSHOFF(priv)]);
 #endif
-      priv->flush += len;
+      priv->flush++;
     }
 
   leave_critical_section(flags);