diff --git a/src/devices/nm-device.c b/src/devices/nm-device.c
index a317ca6ac..430c6f28c 100644
--- a/src/devices/nm-device.c
+++ b/src/devices/nm-device.c
@@ -6670,8 +6670,8 @@ static gboolean
 spawn_ping (NMDevice *self)
 {
 	NMDevicePrivate *priv = NM_DEVICE_GET_PRIVATE (self);
-	gs_free char *str_timeout;
-	gs_free char *tmp_str;
+	gs_free char *str_timeout = NULL;
+	gs_free char *tmp_str = NULL;
 	const char *args[] = { priv->gw_ping.binary, "-I", nm_device_get_ip_iface (self),
 	                       "-c", "1", "-w", NULL, priv->gw_ping.address, NULL };
 	gs_free_error GError *error = NULL;
diff --git a/src/platform/nm-linux-platform.c b/src/platform/nm-linux-platform.c
index 964248451..f866c6101 100644
--- a/src/platform/nm-linux-platform.c
+++ b/src/platform/nm-linux-platform.c
@@ -993,7 +993,7 @@ _nmp_vt_cmd_plobj_init_from_nl_link (NMPlatform *platform, NMPlatformObject *_ob
 	const char *kind;
 	gboolean completed_from_cache_val = FALSE;
 	gboolean *completed_from_cache = complete_from_cache ? &completed_from_cache_val : NULL;
-	const NMPObject *link_cached;
+	const NMPObject *link_cached = NULL;
 
 	nm_assert (memcmp (obj, ((char [sizeof (NMPObjectLink)]) { 0 }), sizeof (NMPObjectLink)) == 0);