diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/util/FileUtils.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/util/FileUtils.java
index bbaed7d0..b2631f13 100644
--- a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/util/FileUtils.java
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/util/FileUtils.java
@@ -49,7 +49,8 @@ public class FileUtils {
 
     /**
      * Reads the contents of the given InputStream into a byte array, but does not
-     * read more than maxLen bytes.
+     * read more than maxLen bytes. If the stream provides more than maxLen bytes,
+     * an IOException is thrown.
      * @param in the stream to read from
      * @param maxLen the maximum number of bytes to read/return
      * @return the bytes read from the InputStream