diff --git a/index.d.ts b/index.d.ts
index b128e179..b7bd68bd 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -1,5 +1,5 @@
 declare module 'react-native-numeric-input' {
-  import { ViewStyle } from 'react-native'
+  import { ViewStyle, TextStyle } from 'react-native'
   import { Color } from 'csstype'
 
   export interface INumericInputProps {
@@ -11,7 +11,7 @@ declare module 'react-native-numeric-input' {
     initValue?: number
     iconSize?: number
     borderColor?: Color
-    iconStyle?: ViewStyle
+    iconStyle?: TextStyle
     totalWidth?: number
     separatorWidth?: number
     type?: 'plus-minus' | 'up-down'