diff --git a/ChangeLog.d/add-missing-parenthesis.txt b/ChangeLog.d/add-missing-parenthesis.txt
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+++ b/ChangeLog.d/add-missing-parenthesis.txt
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+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.