diff --git a/bundles/org.openhab.binding.miio/src/main/resources/database/yunmi.waterpurifier.json b/bundles/org.openhab.binding.miio/src/main/resources/database/yunmi.waterpurifier.json
index 8a13b9a14..2cbcfaab6 100644
--- a/bundles/org.openhab.binding.miio/src/main/resources/database/yunmi.waterpurifier.json
+++ b/bundles/org.openhab.binding.miio/src/main/resources/database/yunmi.waterpurifier.json
@@ -234,7 +234,6 @@
 				"friendlyName": "Light Mode",
 				"channel": "lightMode",
 				"type": "Number",
-				"refresh": true,
 				"stateDescription": {
 					"options": [
 						{
@@ -247,6 +246,7 @@
 						}
 					]
 				},
+				"refresh": true,
 				"actions": [
 					{
 						"command": "set_lightMode",
diff --git a/bundles/org.openhab.binding.miio/src/main/resources/database/yunmi.waterpurifier.lx8.json b/bundles/org.openhab.binding.miio/src/main/resources/database/yunmi.waterpurifier.lx8.json
index 12217c3c6..b22258148 100644
--- a/bundles/org.openhab.binding.miio/src/main/resources/database/yunmi.waterpurifier.lx8.json
+++ b/bundles/org.openhab.binding.miio/src/main/resources/database/yunmi.waterpurifier.lx8.json
@@ -198,7 +198,6 @@
 				"friendlyName": "Light Mode",
 				"channel": "lightMode",
 				"type": "Number",
-				"refresh": true,
 				"stateDescription": {
 					"options": [
 						{
@@ -211,6 +210,7 @@
 						}
 					]
 				},
+				"refresh": true,
 				"actions": [
 					{
 						"command": "set_lightMode",
diff --git a/bundles/org.openhab.binding.miio/src/main/resources/database/zhimi.airpurifier.ma4-miot.json b/bundles/org.openhab.binding.miio/src/main/resources/database/zhimi.airpurifier.ma4-miot.json
index cfc322cbc..ba1990224 100644
--- a/bundles/org.openhab.binding.miio/src/main/resources/database/zhimi.airpurifier.ma4-miot.json
+++ b/bundles/org.openhab.binding.miio/src/main/resources/database/zhimi.airpurifier.ma4-miot.json
@@ -140,8 +140,8 @@
 				"property": "pm2.5-density",
 				"siid": 3,
 				"piid": 6,
-				"friendlyName": "Environment - Pm2 5 Density",
-				"channel": "pm2.5-density",
+				"friendlyName": "Environment - Pm2.5 Density",
+				"channel": "pm2_5-density",
 				"type": "Number",
 				"stateDescription": {
 					"minimum": 0.0,
diff --git a/bundles/org.openhab.binding.miio/src/main/resources/database/zhimi.airpurifier.mb3-miot.json b/bundles/org.openhab.binding.miio/src/main/resources/database/zhimi.airpurifier.mb3-miot.json
index b7f97af5d..9dae01927 100644
--- a/bundles/org.openhab.binding.miio/src/main/resources/database/zhimi.airpurifier.mb3-miot.json
+++ b/bundles/org.openhab.binding.miio/src/main/resources/database/zhimi.airpurifier.mb3-miot.json
@@ -140,8 +140,8 @@
 				"property": "pm2.5-density",
 				"siid": 3,
 				"piid": 6,
-				"friendlyName": "Environment - Pm2 5",
-				"channel": "pm2.5-density",
+				"friendlyName": "Environment - Pm2.5 density",
+				"channel": "pm2_5-density",
 				"type": "Number",
 				"stateDescription": {
 					"minimum": 0.0,