diff --git a/sonoff/xdrv_03_energy.ino b/sonoff/xdrv_03_energy.ino
index b3d717d65..d6d27c718 100644
--- a/sonoff/xdrv_03_energy.ino
+++ b/sonoff/xdrv_03_energy.ino
@@ -371,7 +371,12 @@ bool CseSerialInput()
       return 1;
     }
   } else {
-    if (0x5A == serial_in_byte) {             // 0x5A - Packet header 2
+    if ((0x5A == serial_in_byte) && (serial_in_byte_counter)) {  // 0x5A - Packet header 2
+      if (serial_in_byte_counter > 1) {       // Sync buffer with data (issue #1907)
+        serial_in_buffer[0] = serial_in_buffer[--serial_in_byte_counter];
+        serial_in_byte_counter = 1;
+        AddLog_P(LOG_LEVEL_DEBUG, PSTR("CSE: Fixed out-of-sync"));
+      }
       cse_receive_flag = 1;
     } else {
       serial_in_byte_counter = 0;