diff --git a/src/conf/domain_addr.c b/src/conf/domain_addr.c
index 5e875a3e6e..0c914fe25c 100644
--- a/src/conf/domain_addr.c
+++ b/src/conf/domain_addr.c
@@ -1491,7 +1491,7 @@ virDomainVirtioSerialAddrAssign(virDomainDefPtr def,
                                 bool portOnly)
 {
     int ret = -1;
-    virDomainDeviceInfo nfo = { NULL };
+    virDomainDeviceInfo nfo = { 0 };
     virDomainDeviceInfoPtr ptr = allowZero ? &nfo : info;
 
     ptr->type = VIR_DOMAIN_DEVICE_ADDRESS_TYPE_VIRTIO_SERIAL;
diff --git a/tests/sysinfotest.c b/tests/sysinfotest.c
index a61da017c9..53d5725fd2 100644
--- a/tests/sysinfotest.c
+++ b/tests/sysinfotest.c
@@ -91,7 +91,7 @@ sysinfotest_run(const char *test,
                 const char *cpuinfo,
                 const char *expected)
 {
-    struct testSysinfoData testdata = { NULL };
+    struct testSysinfoData testdata = { 0 };
     int ret = EXIT_FAILURE;
 
     testdata.func = func;