diff --git a/CHANGELOG.md b/CHANGELOG.md
index 450d4e7..d70fb7d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,9 @@
+# v1.2.2 (2019-05-04)
+
+## Bug Fixes
+
+* Corrected ReadMe information, closes [#97](https://github.com/dhlab-basel/json2typescript/issues/97)
+
 # v1.2.1 (2019-05-02)
 
 ## Bug Fixes
@@ -13,7 +19,7 @@
 ## Breaking Changes
 
 * If a property is declared optional (by `@JsonProperty(name, Type, true)`), then `null` is now ignored in both serialization and deserialization. 
-Before this version, `json2typescript` would have thrown an error if `ValueChecking.DISABLE_NULL` was used.
+Before this version, `json2typescript` would have thrown an error if `ValueChecking.DISALLOW_NULL` was used.
 
 # v1.1.1 (2019-02-12)
 
diff --git a/README.md b/README.md
index 0a68334..c95a0ea 100644
--- a/README.md
+++ b/README.md
@@ -26,8 +26,8 @@ let user: User = jsonConvert.deserializeObject(jsonObj, User);
 console.log(user); // prints User{ ... } in JavaScript runtime, not Object{ ... }
 ```
 
-> Tip: All `serialize()` and `deserialize()` methods may throw an exception in case of failure. 
-Make sure you catch the errors in production!
+> Tip: All `serialize()` and `deserialize()` methods may throw an `Error` in case of failure. 
+Make sure you catch errors in production!
 
 ---
 
@@ -220,7 +220,7 @@ export class AppComponent implements OnInit {
         // Map to the country class
         let country: Country;
         try {
-            country = jsonConvert.deserialize(jsonObject, Country);
+            country = jsonConvert.deserializeObject(jsonObject, Country);
             country.cities[0].printInfo(); // prints: Basel was founded in -200 and is really beautiful!
         } catch (e) {
             console.log((<Error>e));
@@ -326,7 +326,7 @@ See the examples at the end of this document for more info about nesting arrays.
 
 ##### Adding a custom converter
 
-More advanced users may need to use custom converters. If you don't want
+More advanced users may need to use custom converters. If you want
 `json2typescript` to use your custom converter, you need to follow these
 steps:
 
@@ -358,6 +358,10 @@ The type is still checked as soon the property is present again.
 
 The same applies for the case when you try to serialize a TypeScript object to a JSON object. If the property is not defined in the class and optional, it will not be added to the JSON object.
 
+> Tip: Some API's return null instead of omitting optional values. 
+If you flag a property as optional, `json2typescript` will ignore null values and keep the default value of the property instead. 
+This fact is particularly helpful if your project uses TypeScript `strictNullChecks` or/and disallows `null` values through the `valueCheckingMode` property in `json2typescript`.
+
 #### Important notes
 
 * Make sure you define the expected type as accurate as possible, even if you expect primitive types.
@@ -454,7 +458,9 @@ The default is `ValueCheckingMode.ALLOW_OBJECT_NULL`.
 
 > Tip: Make sure you import the `ENUM` `ValueCheckingMode` when assigning a value to this property.
 
-> Tip: The TypeScript developer team suggests you to avoid null values. If your JSON api doesn't return null values, you should try the last flag disallowing null values.
+> Tip: The TypeScript documentation suggests to avoid null values.
+Compile your TypeScript code with `strictNullChecks=true` and set the `valueCheckingMode` to disallow null values.
+If your API returns `null` in some cases, simply mark these properties as optional in the corresponding `JsonProperty` decorator to avoid errors on runtime.
 
 #### Ignore primitive checks
 
diff --git a/package.json b/package.json
index 0fbef45..aca457d 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "json2typescript",
-  "version": "1.2.1",
+  "version": "1.2.2",
   "description": "Provides TypeScript methods to map a JSON object to a JavaScript object on runtime",
   "keywords": [
     "convert",