diff --git a/ChangeLog.d/add-missing-parenthesis.txt b/ChangeLog.d/add-missing-parenthesis.txt
new file mode 100644
index 000000000..ec01985e9
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+++ b/ChangeLog.d/add-missing-parenthesis.txt
@@ -0,0 +1,4 @@
+Bugfix
+   * Add a parenthesis that was missing from ecp.c when
+     MBEDTLS_ECP_RANDOMIZE_MXZ_ALT is defined. Found and reported by
+     mbeniamino in #4217.