diff --git a/tests/app/data/observable-array-tests.ts b/tests/app/data/observable-array-tests.ts
index 11c8b31ac..1c51e01da 100644
--- a/tests/app/data/observable-array-tests.ts
+++ b/tests/app/data/observable-array-tests.ts
@@ -410,7 +410,7 @@ export const test_ObservableArray_spliceShouldRemoveAndInertSpecifiedNumberOfEle
         // args.action is "splice".
         // args.index is the start index.
         // args.removed.length is equal to the number of deleted items.
-        // args.addedCount is equal to the delta between number of inserted items and number of deleted items but not less than 0.
+        // args.addedCount is equal to the amount of added and replaced items.
 
         // >> (hide)
         result = args;
@@ -421,7 +421,7 @@ export const test_ObservableArray_spliceShouldRemoveAndInertSpecifiedNumberOfEle
     // << observable-array-splice-args-change
 
     TKUnit.assert(result.eventName === ObservableArray.changeEvent && result.action === ChangeType.Splice &&
-        result.removed.length === 2 && result.index === 1 && result.addedCount === 1, "ObservableArray splice() should raise 'change' event with correct args!");
+        result.removed.length === 2 && result.index === 1 && result.addedCount === 3, "ObservableArray splice() should raise 'change' event with correct args!");
 };
 
 export const test_ObservableArray_unshiftShouldInsertNewElementsFromTheStart = function () {
diff --git a/tns-core-modules/data/observable-array/observable-array.ts b/tns-core-modules/data/observable-array/observable-array.ts
index f54765283..472d3566d 100644
--- a/tns-core-modules/data/observable-array/observable-array.ts
+++ b/tns-core-modules/data/observable-array/observable-array.ts
@@ -207,7 +207,7 @@ export class ObservableArray<T> extends observable.Observable implements observa
             action: ChangeType.Splice,
             index: start,
             removed: result,
-            addedCount: this._array.length > length ? this._array.length - length : 0
+            addedCount: this._array.length + result.length - length
         });
         if (this._array.length !== length) {
             this._notifyLengthChange();