diff --git a/ChangeLog.d/fix-iar-warnings.txt b/ChangeLog.d/fix-iar-warnings.txt
new file mode 100644
index 0000000000..244e8630de
--- /dev/null
+++ b/ChangeLog.d/fix-iar-warnings.txt
@@ -0,0 +1,2 @@
+Bugfix
+   * Fix IAR compiler warnings. Contributed by Glenn Strauss in #3835.