diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/btle/BLETypeConversions.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/btle/BLETypeConversions.java
index 4be773b90..1c4e603a0 100644
--- a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/btle/BLETypeConversions.java
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/btle/BLETypeConversions.java
@@ -63,7 +63,7 @@ public class BLETypeConversions {
     /**
      * Similar to calendarToRawBytes, but only up to (and including) the MINUTES.
      * @param timestamp
-     * @return
+     * @return byte array of 6 bytes
      */
     public static byte[] shortCalendarToRawBytes(Calendar timestamp) {
         // MiBand2: