diff --git a/_CoqProject b/_CoqProject
index 1c252fed8ab3f9361cde0f208c296a04303d0ec4..5f77c3f8d75fa496e748bebabffcd1a233afff82 100644
--- a/_CoqProject
+++ b/_CoqProject
@@ -1,6 +1,8 @@
 -Q theories actris
 # We sometimes want to locally override notation, and there is no good way to do that with scopes.
 -arg -w -arg -notation-overridden
+# Coq emits warnings when a custom entry is reimported, this is too noisy.
+-arg -w -arg -custom-entry-overriden
 # Cannot use non-canonical projections as it causes massive unification failures
 # (https://github.com/coq/coq/issues/6294).
 -arg -w -arg -redundant-canonical-projection