diff --git a/tests/compat.sh b/tests/compat.sh
index 5a3c222c0..04af41003 100755
--- a/tests/compat.sh
+++ b/tests/compat.sh
@@ -677,7 +677,7 @@ setup_arguments()
     esac
 
     P_SERVER_ARGS="server_port=$PORT server_addr=0.0.0.0 force_version=$MODE arc4=1"
-    O_SERVER_ARGS="-accept $PORT -www -cipher NULL,ALL -$MODE"
+    O_SERVER_ARGS="-accept $PORT -www -cipher NULL,ALL -$MODE -dhparam data_files/dhparams.pem"
     G_SERVER_ARGS="-p $PORT --http"
     G_SERVER_PRIO="NORMAL:+ARCFOUR-128:+NULL:+MD5:+PSK:+DHE-PSK:+ECDHE-PSK:+RSA-PSK:-VERS-TLS-ALL:$G_PRIO_MODE"
 
diff --git a/tests/ssl-opt.sh b/tests/ssl-opt.sh
index 5cf4ff608..4595b890a 100755
--- a/tests/ssl-opt.sh
+++ b/tests/ssl-opt.sh
@@ -17,7 +17,7 @@ set -u
 : ${GNUTLS_CLI:=gnutls-cli}
 : ${GNUTLS_SERV:=gnutls-serv}
 
-O_SRV="$OPENSSL_CMD s_server -www -cert data_files/server5.crt -key data_files/server5.key"
+O_SRV="$OPENSSL_CMD s_server -www -cert data_files/server5.crt -key data_files/server5.key -dhparam data_files/dhparams.pem"
 O_CLI="echo 'GET / HTTP/1.0' | $OPENSSL_CMD s_client"
 G_SRV="$GNUTLS_SERV --x509certfile data_files/server5.crt --x509keyfile data_files/server5.key"
 G_CLI="echo 'GET / HTTP/1.0' | $GNUTLS_CLI --x509cafile data_files/test-ca_cat12.crt"