diff --git a/action.yml b/action.yml
index f5539f52..ce076c41 100644
--- a/action.yml
+++ b/action.yml
@@ -53,6 +53,7 @@ inputs:
     description: '[Deprecated] Use androidExportType instead. Whether to build .aab instead of .apk'
   androidExportType:
     required: false
+    default: ''
     description:
       'The android export type. Should be androidPackage for apk, androidAppBundle for aab, or androidStudioProject for
       an android studio project.'