diff --git a/libopencm3 b/libopencm3
index 1f3abd43..228f28fa 160000
--- a/libopencm3
+++ b/libopencm3
@@ -1 +1 @@
-Subproject commit 1f3abd43763fa39d23e737602b6d0011a45c70b2
+Subproject commit 228f28fa66b672535663aa9aa4d12ede8b1a8fc5