diff --git a/README.hbs b/README.hbs
index a5adab6..6e84073 100644
--- a/README.hbs
+++ b/README.hbs
@@ -55,6 +55,7 @@ client.on('no_response', () => {
 | Command | Values | Description |
 |-|-|-|
 | **temperature** | any integer |In degrees Celsius by default |
+| **currentTemperature** | any integer |In degrees Celsius by default. (Read-only) |
 | **mode** | _auto_, _cool_, _heat_, _dry_, _fan_only_|Operation mode |
 | **fanspeed** | _auto_, _low_, _mediumLow_, _medium_, _mediumHigh_, _high_ | Fan speed |
 | **swinghor** | _default_, _full_, _fixedLeft_, _fixedMidLeft_, _fixedMid_, _fixedMidRight_, _fixedRight_ | Horizontal Swing |
diff --git a/README.md b/README.md
index 171d0af..06fc80b 100644
--- a/README.md
+++ b/README.md
@@ -55,6 +55,7 @@ client.on('no_response', () => {
 | Command | Values | Description |
 |-|-|-|
 | **temperature** | any integer |In degrees Celsius by default |
+| **currentTemperature** | any integer |In degrees Celsius by default. (Read-only) |
 | **mode** | _auto_, _cool_, _heat_, _dry_, _fan_only_|Operation mode |
 | **fanspeed** | _auto_, _low_, _mediumLow_, _medium_, _mediumHigh_, _high_ | Fan speed |
 | **swinghor** | _default_, _full_, _fixedLeft_, _fixedMidLeft_, _fixedMid_, _fixedMidRight_, _fixedRight_ | Horizontal Swing |
diff --git a/test/property-transformer-test.js b/test/property-transformer-test.js
index 71eeddb..8199c9d 100644
--- a/test/property-transformer-test.js
+++ b/test/property-transformer-test.js
@@ -17,6 +17,17 @@ describe('PropertyTransformer', function () {
                 currentTemperature: 27
             });
         });
+
+        it('should not subtract 40 from vendor value in case of zero', function () {
+            const SUT = new PropertyTransformer();
+            const result = SUT.fromVendor({
+                TemSen: 0
+            });
+
+            assert.deepEqual(result, {
+                currentTemperature: 0
+            });
+        });
     });
     describe('#toVendor()', function () {
         it('should transform from human friendly to vendor', function () {