diff --git a/README.md b/README.md
index 4f38141..7a0d90a 100644
--- a/README.md
+++ b/README.md
@@ -28,7 +28,7 @@ Presets cover attiny85/atmega328p in both libavr modes (generated and
 reflect); `ctest` runs the consteval battery over the BCD, the hours
 register's two formats, the weekday, the alarm registers each rate writes and
 the control and status write-backs, and holds the example to its stated size —
-**1468 B** on the mega328P and **1256 B** on the tiny85, byte-identical across
+**1462 B** on the mega328P and **1256 B** on the tiny85, byte-identical across
 the two modes. The legacy
 yazoalfa-based driver lives on the `master` branch.
 
diff --git a/libavr b/libavr
index 93d8b0e..73fde9c 160000
--- a/libavr
+++ b/libavr
@@ -1 +1 @@
-Subproject commit 93d8b0e491713100af53f0117b008efd8e548e15
+Subproject commit 73fde9c243bdcca160b18f6443ba68f5565cf525
diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index d6bd91a..d6ad4fb 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -3,7 +3,7 @@ libavr_format_test()
 # The example's size is stated in the README, per chip, and a library advance
 # that moves it silently is what this catches.
 if(LIBAVR_MCU STREQUAL "atmega328p")
-	libavr_size_claim_test(clock 1468)
+	libavr_size_claim_test(clock 1462)
 elseif(LIBAVR_MCU STREQUAL "attiny85")
 	libavr_size_claim_test(clock 1256)
 endif()