diff --git a/sonoff/_changelog.ino b/sonoff/_changelog.ino
index 68ae053a5..4d6cb27aa 100644
--- a/sonoff/_changelog.ino
+++ b/sonoff/_changelog.ino
@@ -4,6 +4,7 @@
  * Add support for Shelly 1PM Template {"NAME":"Shelly 1PM","GPIO":[56,0,0,0,82,134,0,0,0,0,0,21,0],"FLAG":2,"BASE":18} (#5716)
  * Fix Sonoff Pow R2 / S31 invalid energy increments (#5789)
  * Add device OverTemp (>73 Celsius) detection to any Energy Monitoring device with temperature sensor powering off all outputs
+ * Add rule support for single JSON value pair like {"SSerialReceived":"on"} by expanding it to {"SSerialReceived":{"Data":"on"}} allowing for trigger SSerialReceived#Data=on (#5638)
  *
  * 6.5.0.9 20190418
  * Add command SetOption63 0/1 to disable relay state feedback scan at restart (#5594, #5663)
diff --git a/sonoff/sonoff.ino b/sonoff/sonoff.ino
index 049fe688f..a9b664ec6 100755
--- a/sonoff/sonoff.ino
+++ b/sonoff/sonoff.ino
@@ -2358,7 +2358,7 @@ void SerialInput(void)
       ResponseAppend_P(PSTR("\"}"));
     }
     MqttPublishPrefixTopic_P(RESULT_OR_TELE, PSTR(D_JSON_SERIALRECEIVED));
-//      XdrvRulesProcess();
+    XdrvRulesProcess();
     serial_in_byte_counter = 0;
   }
 }
diff --git a/sonoff/xdrv_10_rules.ino b/sonoff/xdrv_10_rules.ino
index 17b14ef42..3c0d05d4a 100644
--- a/sonoff/xdrv_10_rules.ino
+++ b/sonoff/xdrv_10_rules.ino
@@ -392,6 +392,15 @@ bool RulesProcessEvent(char *json_event)
 #endif
 
   String event_saved = json_event;
+  // json_event = {"INA219":{"Voltage":4.494,"Current":0.020,"Power":0.089}}
+  // json_event = {"System":{"Boot":1}}
+  // json_event = {"SerialReceived":"on"} - invalid but will be expanded to {"SerialReceived":{"Data":"on"}}
+  char *p = strchr(json_event, ':');
+  if ((p != NULL) && !(strchr(++p, ':'))) {  // Find second colon
+    event_saved.replace(F(":"), F(":{\"Data\":"));
+    event_saved += F("}");
+    // event_saved = {"SerialReceived":{"Data":"on"}}
+  }
   event_saved.toUpperCase();
 
 //AddLog_P2(LOG_LEVEL_DEBUG, PSTR("RUL: Event %s"), event_saved.c_str());