diff --git a/api-reports/2_12.txt b/api-reports/2_12.txt
index 65cd6e670..ab852012b 100644
--- a/api-reports/2_12.txt
+++ b/api-reports/2_12.txt
@@ -3797,9 +3797,9 @@ raw/FileReader[JC] def addEventListener[T <: Event](`type`: String, listener: js
 raw/FileReader[JC] def addEventListener[T <: Event](`type`: String, listener: js.Function1[T, _], useCapture: Boolean?): Unit
 raw/FileReader[JC] def dispatchEvent(evt: Event): Boolean
 raw/FileReader[JC] def error: DOMException
-raw/FileReader[JC] var onabort: js.Function1[Event, _]
-raw/FileReader[JC] var onerror: js.Function1[Event, _]
-raw/FileReader[JC] var onload: js.Function1[UIEvent, _]
+raw/FileReader[JC] var onabort: js.Function1[ProgressEvent, _]
+raw/FileReader[JC] var onerror: js.Function1[ProgressEvent, _]
+raw/FileReader[JC] var onload: js.Function1[ProgressEvent, _]
 raw/FileReader[JC] var onloadend: js.Function1[ProgressEvent, _]
 raw/FileReader[JC] var onloadstart: js.Function1[ProgressEvent, _]
 raw/FileReader[JC] var onprogress: js.Function1[ProgressEvent, _]
diff --git a/api-reports/2_13.txt b/api-reports/2_13.txt
index 39ac8b2b1..95498f9b0 100644
--- a/api-reports/2_13.txt
+++ b/api-reports/2_13.txt
@@ -3797,9 +3797,9 @@ raw/FileReader[JC] def addEventListener[T <: Event](`type`: String, listener: js
 raw/FileReader[JC] def addEventListener[T <: Event](`type`: String, listener: js.Function1[T, _], useCapture: Boolean?): Unit
 raw/FileReader[JC] def dispatchEvent(evt: Event): Boolean
 raw/FileReader[JC] def error: DOMException
-raw/FileReader[JC] var onabort: js.Function1[Event, _]
-raw/FileReader[JC] var onerror: js.Function1[Event, _]
-raw/FileReader[JC] var onload: js.Function1[UIEvent, _]
+raw/FileReader[JC] var onabort: js.Function1[ProgressEvent, _]
+raw/FileReader[JC] var onerror: js.Function1[ProgressEvent, _]
+raw/FileReader[JC] var onload: js.Function1[ProgressEvent, _]
 raw/FileReader[JC] var onloadend: js.Function1[ProgressEvent, _]
 raw/FileReader[JC] var onloadstart: js.Function1[ProgressEvent, _]
 raw/FileReader[JC] var onprogress: js.Function1[ProgressEvent, _]
diff --git a/src/main/scala/org/scalajs/dom/raw/lib.scala b/src/main/scala/org/scalajs/dom/raw/lib.scala
index d19613eef..7db4b33dc 100644
--- a/src/main/scala/org/scalajs/dom/raw/lib.scala
+++ b/src/main/scala/org/scalajs/dom/raw/lib.scala
@@ -7782,7 +7782,7 @@ class FileReader() extends EventTarget {
    *
    * MDN
    */
-  var onabort: js.Function1[Event, _] = js.native
+  var onabort: js.Function1[ProgressEvent, _] = js.native
 
   /**
    * A handler for the error event. This event is triggered each time the reading
@@ -7790,7 +7790,7 @@ class FileReader() extends EventTarget {
    *
    * MDN
    */
-  var onerror: js.Function1[Event, _] = js.native
+  var onerror: js.Function1[ProgressEvent, _] = js.native
 
   /**
    * A handler for the load event. This event is triggered each time the reading
@@ -7798,7 +7798,7 @@ class FileReader() extends EventTarget {
    *
    * MDN
    */
-  var onload: js.Function1[UIEvent, _] = js.native
+  var onload: js.Function1[ProgressEvent, _] = js.native
 
   /**
    * A handler for the loadstart event. This event is triggered each time the reading