diff --git a/net/rubygem-ovirt-engine-sdk/Makefile b/net/rubygem-ovirt-engine-sdk/Makefile
index db86b8855b90..f28dce47ede7 100644
--- a/net/rubygem-ovirt-engine-sdk/Makefile
+++ b/net/rubygem-ovirt-engine-sdk/Makefile
@@ -1,26 +1,20 @@
 PORTNAME=	ovirt-engine-sdk
 PORTVERSION=	4.4.1
 PORTREVISION=	2
 CATEGORIES=	net rubygems
 MASTER_SITES=	RG
 
 MAINTAINER=	sunpoet@FreeBSD.org
 COMMENT=	Ruby SDK for the oVirt Engine API
 WWW=		https://ovirt.org/
 
 LICENSE=	APACHE20
 LICENSE_FILE=	${WRKSRC}/LICENSE.txt
 
 LIB_DEPENDS=	libcurl.so:ftp/curl
 RUN_DEPENDS=	rubygem-json>=1<3:devel/rubygem-json
 
 USES=		gem gnome
 USE_GNOME=	libxml2
 
-.include <bsd.port.options.mk>
-
-.if ${OPSYS} == FreeBSD && ${OSVERSION} >= 1400091
-CONFIGURE_ARGS+=	--with-cflags="-Wno-error=incompatible-function-pointer-types"
-.endif
-
 .include <bsd.port.mk>
diff --git a/net/rubygem-ovirt-engine-sdk/files/patch-clang16 b/net/rubygem-ovirt-engine-sdk/files/patch-clang16
new file mode 100644
index 000000000000..d3eb39b8a84a
--- /dev/null
+++ b/net/rubygem-ovirt-engine-sdk/files/patch-clang16
@@ -0,0 +1,11 @@
+--- ext/ovirtsdk4c/ov_http_client.c.orig	2023-06-24 11:23:37 UTC
++++ ext/ovirtsdk4c/ov_http_client.c
+@@ -998,7 +998,7 @@ static void ov_http_client_prepare_handle(ov_http_clie
+ 
+     /* Set the headers: */
+     if (!NIL_P(request_ptr->headers)) {
+-        rb_hash_foreach(request_ptr->headers, ov_http_client_add_header, (VALUE) headers);
++        rb_hash_foreach(request_ptr->headers, (int (*)(VALUE, VALUE, VALUE)) ov_http_client_add_header, (VALUE) headers);
+     }
+     curl_easy_setopt(handle, CURLOPT_HTTPHEADER, *headers);
+