diff --git a/src/impl/certificate.hpp b/src/impl/certificate.hpp
index 1ee23da83..e7ca63e6c 100644
--- a/src/impl/certificate.hpp
+++ b/src/impl/certificate.hpp
@@ -9,7 +9,7 @@
 #ifndef RTC_IMPL_CERTIFICATE_H
 #define RTC_IMPL_CERTIFICATE_H
 
-#include "description.hpp"
+#include "description.hpp" // for CertificateFingerprint
 #include "common.hpp"
 #include "configuration.hpp" // for CertificateType
 #include "init.hpp"