diff --git a/android/src/main/java/com/lodev09/exify/ExifyTags.kt b/android/src/main/java/com/lodev09/exify/ExifyTags.kt
index a1acc19..c90654e 100644
--- a/android/src/main/java/com/lodev09/exify/ExifyTags.kt
+++ b/android/src/main/java/com/lodev09/exify/ExifyTags.kt
@@ -68,7 +68,7 @@ val EXIFY_TAGS = arrayOf(
   arrayOf("double", ExifInterface.TAG_FOCAL_PLANE_X_RESOLUTION),
   arrayOf("double", ExifInterface.TAG_FOCAL_PLANE_Y_RESOLUTION),
   arrayOf("int", ExifInterface.TAG_GAIN_CONTROL),
-  arrayOf("array", ExifInterface.TAG_ISO_SPEED_RATINGS),
+  arrayOf("string", ExifInterface.TAG_ISO_SPEED_RATINGS),
   arrayOf("string", ExifInterface.TAG_IMAGE_UNIQUE_ID),
   arrayOf("int", ExifInterface.TAG_LIGHT_SOURCE),
   arrayOf("string", ExifInterface.TAG_MAKER_NOTE),
diff --git a/src/types.ts b/src/types.ts
index c0175ae..389abe9 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -63,7 +63,7 @@ export interface ExifTags {
   LightSource?: number
   UserComment?: string
   GainControl?: number
-  ISOSpeedRatings?: number[]
+  ISOSpeedRatings?: string
   FocalPlaneResolutionUnit?: number
   FocalPlaneXResolution?: number
   YCbCrCoefficients?: number