diff --git a/megaavr/boards.txt b/megaavr/boards.txt
index 107986f4..dfe79fab 100644
--- a/megaavr/boards.txt
+++ b/megaavr/boards.txt
@@ -1221,8 +1221,8 @@ avrdd.upload.maximum_size=0
 avrdd.upload.maximum_data_size=0
 # The maximum size and data size attributes are overridden by the selected chip. If you are avoiding specifying that somehow, there is no hope of anything working, so don't do that.
 # Each top-level entry supports at least a dozen parts with varying memory constraints.
-avrdd.program.serupdifuse5="-Ufuse5:w:{bootloader.SYSCFG0}:m"
-avrdd.program.avrdudefuse5=5:{bootloader.SYSCFG0}
+avrdd.program.avrdudefuse5="-Ufuse5:w:{bootloader.SYSCFG0}:m"
+avrdd.program.serupdifuse5=5:{bootloader.SYSCFG0}
 
 
 #----------------------------------------#