diff --git a/server/tests/basic-event-loop.c b/server/tests/basic-event-loop.c
index 70c9a4df..b59037bd 100644
--- a/server/tests/basic-event-loop.c
+++ b/server/tests/basic-event-loop.c
@@ -90,6 +90,8 @@ static SpiceWatch *base_watch_add(int fd, int event_mask, SpiceWatchFunc func, v
 
 static SpiceCoreInterface core = {
     .base = {
+        .type = NULL,
+        .description = NULL,
         .major_version = SPICE_INTERFACE_CORE_MAJOR,
         .minor_version = SPICE_INTERFACE_CORE_MINOR,
     },
diff --git a/server/tests/replay.c b/server/tests/replay.c
index 30dee8b0..ecb9843a 100644
--- a/server/tests/replay.c
+++ b/server/tests/replay.c
@@ -252,6 +252,7 @@ static QXLInterface display_sif = {
     },
     .attached_worker = attached_worker,
     .set_compression_level = set_compression_level,
+    .set_mm_time = NULL,
     .get_init_info = get_init_info,
     .get_command = get_display_command,
     .req_cmd_notification = req_display_notification,
diff --git a/server/tests/test-display-base.c b/server/tests/test-display-base.c
index 6d66e8c8..f7b7c692 100644
--- a/server/tests/test-display-base.c
+++ b/server/tests/test-display-base.c
@@ -799,6 +799,7 @@ static QXLInterface display_sif = {
     },
     .attached_worker = attached_worker,
     .set_compression_level = set_compression_level,
+    .set_mm_time = NULL,
     .get_init_info = get_init_info,
 
     /* the callbacks below are called from spice server thread context */
@@ -809,6 +810,8 @@ static QXLInterface display_sif = {
     .req_cursor_notification = req_cursor_notification,
     .notify_update = notify_update,
     .flush_resources = flush_resources,
+    .async_complete = NULL,
+    .update_area_complete = NULL,
     .set_client_capabilities = set_client_capabilities,
     .client_monitors_config = client_monitors_config,
 };
diff --git a/server/tests/test-gst.c b/server/tests/test-gst.c
index 80e62a7e..8976f3ca 100644
--- a/server/tests/test-gst.c
+++ b/server/tests/test-gst.c
@@ -726,6 +726,7 @@ mock_update_client_playback_delay(void *opaque, uint32_t delay_ms)
 }
 
 static VideoEncoderRateControlCbs rate_control_cbs = {
+    .opaque = NULL,
     .get_roundtrip_ms = mock_get_roundtrip_ms,
     .get_source_fps = mock_get_source_fps,
     .update_client_playback_delay = mock_update_client_playback_delay,
diff --git a/server/tests/test-stream-device.c b/server/tests/test-stream-device.c
index 8398839d..b14d82c7 100644
--- a/server/tests/test-stream-device.c
+++ b/server/tests/test-stream-device.c
@@ -42,6 +42,7 @@ static uint8_t *add_stream_hdr(uint8_t *p, StreamMsgType type, uint32_t size)
 {
     StreamDevHeader hdr = {
         .protocol_version = STREAM_DEVICE_PROTOCOL,
+        .padding = 0,
         .type = GUINT16_TO_LE(type),
         .size = GUINT32_TO_LE(size),
     };
diff --git a/server/tests/test-vdagent.c b/server/tests/test-vdagent.c
index c734ddec..fee305f9 100644
--- a/server/tests/test-vdagent.c
+++ b/server/tests/test-vdagent.c
@@ -96,14 +96,15 @@ static SpiceCharDeviceInterface vmc_interface = {
 };
 
 static SpiceCharDeviceInstance vmc_instance = {
+    .base = { NULL },
     .subtype = "vdagent",
 };
 
 static void test_multiple_vmc_devices(void)
 {
     SpiceCharDeviceInstance vmc_instances[2] = {
-        { .subtype = "vdagent", },
-        { .subtype = "vdagent", }
+        { .base = { NULL }, .subtype = "vdagent", },
+        { .base = { NULL }, .subtype = "vdagent", }
     };
     int status;