diff --git a/mail-mta/exim/exim-4.92-r2.ebuild b/mail-mta/exim/exim-4.92-r2.ebuild
index 3ccacfb418c6f..1ec2588c98836 100644
--- a/mail-mta/exim/exim-4.92-r2.ebuild
+++ b/mail-mta/exim/exim-4.92-r2.ebuild
@@ -14,6 +14,7 @@ REQUIRED_USE="
 	pkcs11? ( ssl )
 	spf? ( exiscan-acl )
 	srs? ( exiscan-acl )
+	!ssl? ( !dkim )
 "
 # NOTE on USE="gnutls dane", gnutls[dane] is masked in base, unmasked
 # for x86 and amd64 only, due to this, repoman won't allow depending on