diff --git a/src/label-common.ts b/src/label-common.ts
index b26eff5..dc7b599 100644
--- a/src/label-common.ts
+++ b/src/label-common.ts
@@ -5,6 +5,28 @@ import { Label as TNLabel } from 'tns-core-modules/ui/label';
 import { Style } from 'tns-core-modules/ui/styling/style';
 import { layout } from 'tns-core-modules/utils/utils';
 import { Label as LabelViewDefinition, TextShadow } from './label';
+import { FormattedString } from 'tns-core-modules/text/formatted-string';
+import { Span } from 'tns-core-modules/text/span';
+
+
+declare module 'tns-core-modules/text/formatted-string' {
+    interface FormattedString {
+        addPropertyChangeHandler(): void;
+        removePropertyChangeHandler(): void;
+    }
+}
+declare module 'tns-core-modules/text/span' {
+    interface Span {
+        addPropertyChangeHandler(): void;
+        removePropertyChangeHandler(): void;
+    }
+}
+
+FormattedString.prototype.addPropertyChangeHandler = function() {}
+FormattedString.prototype.removePropertyChangeHandler = function() {}
+Span.prototype.addPropertyChangeHandler = function() {}
+Span.prototype.removePropertyChangeHandler = function() {}
+
 
 export const cssProperty = (target: Object, key: string | symbol) => {
     // property getter
diff --git a/src/label.android.ts b/src/label.android.ts
index c4d54a5..c74773e 100644
--- a/src/label.android.ts
+++ b/src/label.android.ts
@@ -59,23 +59,14 @@ Font.prototype.getAndroidTypeface = function() {
 declare module 'tns-core-modules/text/formatted-string' {
     interface FormattedString {
         toNativeString(): string;
-        addPropertyChangeHandler(): void;
-        removePropertyChangeHandler(): void;
     }
 }
 declare module 'tns-core-modules/text/span' {
     interface Span {
         toNativeString(): string;
-        addPropertyChangeHandler(): void;
-        removePropertyChangeHandler(): void;
     }
 }
 
-FormattedString.prototype.addPropertyChangeHandler = function() {}
-FormattedString.prototype.removePropertyChangeHandler = function() {}
-Span.prototype.addPropertyChangeHandler = function() {}
-Span.prototype.removePropertyChangeHandler = function() {}
-
 FormattedString.prototype.toNativeString = function() {
     let result = '';
     const length = this._spans.length;