diff --git a/srcpkgs/openvpn/template b/srcpkgs/openvpn/template
index ea91ee802de..63a8ce1b77e 100644
--- a/srcpkgs/openvpn/template
+++ b/srcpkgs/openvpn/template
@@ -4,7 +4,7 @@ version=2.4.9
 revision=3
 build_style=gnu-configure
 configure_args="$(vopt_enable pkcs11) --enable-iproute2 --disable-systemd
- $(vopt_with mbedtls crypto-library=mbedtls)"
+ $(vopt_if mbedtls --with-crypto-library=mbedtls)"
 hostmakedepends="iproute2 pkg-config"
 makedepends="$(vopt_if mbedtls mbedtls-devel libressl-devel) lzo-devel pam-devel
  $(vopt_if pkcs11 pkcs11-helper-devel) cmocka-devel"