diff --git a/libopencm3 b/libopencm3
index 8545d9d..b2df978 160000
--- a/libopencm3
+++ b/libopencm3
@@ -1 +1 @@
-Subproject commit 8545d9d56581c6b6706684fd0a4ba903cf53c595
+Subproject commit b2df978eae02ada4cc5e7d41f8f15583bbdf3a46