diff --git a/tests/unit_tests/openvpn/Makefile.am b/tests/unit_tests/openvpn/Makefile.am
index 650126c7ef5..dd3985d613a 100644
--- a/tests/unit_tests/openvpn/Makefile.am
+++ b/tests/unit_tests/openvpn/Makefile.am
@@ -77,7 +77,7 @@ packet_id_testdriver_SOURCES = test_packet_id.c mock_msg.c mock_msg.h \
 pkt_testdriver_CFLAGS  = @TEST_CFLAGS@ \
 	-I$(top_srcdir)/include -I$(top_srcdir)/src/compat -I$(top_srcdir)/src/openvpn
 pkt_testdriver_LDFLAGS = @TEST_LDFLAGS@
-pkt_testdriver_SOURCES = test_pkt.c mock_msg.c mock_msg.h \
+pkt_testdriver_SOURCES = test_pkt.c mock_msg.c mock_msg.h mock_win32_execve.c \
 	$(top_srcdir)/src/openvpn/argv.c \
 	$(top_srcdir)/src/openvpn/base64.c \
 	$(top_srcdir)/src/openvpn/buffer.c \
@@ -104,6 +104,7 @@ tls_crypt_testdriver_LDFLAGS = @TEST_LDFLAGS@ \
 	-Wl,--wrap=parse_line \
 	-Wl,--wrap=rand_bytes
 tls_crypt_testdriver_SOURCES = test_tls_crypt.c mock_msg.c mock_msg.h \
+	mock_win32_execve.c \
 	$(top_srcdir)/src/openvpn/argv.c \
 	$(top_srcdir)/src/openvpn/base64.c \
 	$(top_srcdir)/src/openvpn/buffer.c \
diff --git a/tests/unit_tests/openvpn/mock_win32_execve.c b/tests/unit_tests/openvpn/mock_win32_execve.c
new file mode 100644
index 00000000000..4d37ebe331a
--- /dev/null
+++ b/tests/unit_tests/openvpn/mock_win32_execve.c
@@ -0,0 +1,37 @@
+/*
+ *  OpenVPN -- An application to securely tunnel IP networks
+ *             over a single TCP/UDP port, with support for SSL/TLS-based
+ *             session authentication and key exchange,
+ *             packet encryption, packet authentication, and
+ *             packet compression.
+ *
+ *  Copyright (C) 2023 OpenVPN Inc <sales@openvpn.net>
+ *  Copyright (C) 2023 Arne Schwabe <arne@rfc2549.org>
+ *
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2
+ *  as published by the Free Software Foundation.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "config.h"
+#include "syshead.h"
+
+#include "win32.h"
+
+#ifdef _WIN32
+int
+openvpn_execve(const struct argv *a, const struct env_set *es, const unsigned int flags)
+{
+    ASSERT(0);
+}
+#endif
diff --git a/tests/unit_tests/openvpn/test_pkt.c b/tests/unit_tests/openvpn/test_pkt.c
index 736f1317859..eb698290d1f 100644
--- a/tests/unit_tests/openvpn/test_pkt.c
+++ b/tests/unit_tests/openvpn/test_pkt.c
@@ -71,14 +71,6 @@ print_link_socket_actual(const struct link_socket_actual *act, struct gc_arena *
     return "dummy print_link_socket_actual from unit test";
 }
 
-#ifdef _WIN32
-int
-openvpn_execve(const struct argv *a, const struct env_set *es, const unsigned int flags)
-{
-    ASSERT(0);
-}
-#endif
-
 struct test_pkt_context {
     struct tls_auth_standalone tas_tls_auth;
     struct tls_auth_standalone tas_crypt;