diff --git a/libnm-glib/nm-vpn-plugin.c b/libnm-glib/nm-vpn-plugin.c
index 2af9deb4b..0534b766e 100644
--- a/libnm-glib/nm-vpn-plugin.c
+++ b/libnm-glib/nm-vpn-plugin.c
@@ -800,7 +800,7 @@ set_property (GObject *object, guint prop_id,
 	switch (prop_id) {
 	case PROP_DBUS_SERVICE_NAME:
 		/* Construct-only */
-		priv->dbus_service_name = g_strdup (g_value_get_string (value));
+		priv->dbus_service_name = g_value_dup_string (value);
 		break;
 	case PROP_STATE:
 		nm_vpn_plugin_set_state (NM_VPN_PLUGIN (object),
diff --git a/src/devices/nm-device.c b/src/devices/nm-device.c
index dfbf3ebbc..103af2446 100644
--- a/src/devices/nm-device.c
+++ b/src/devices/nm-device.c
@@ -11693,11 +11693,11 @@ set_property (GObject *object, guint prop_id,
 		break;
 	case PROP_DRIVER_VERSION:
 		g_free (priv->driver_version);
-		priv->driver_version = g_strdup (g_value_get_string (value));
+		priv->driver_version = g_value_dup_string (value);
 		break;
 	case PROP_FIRMWARE_VERSION:
 		g_free (priv->firmware_version);
-		priv->firmware_version = g_strdup (g_value_get_string (value));
+		priv->firmware_version = g_value_dup_string (value);
 		break;
 	case PROP_MTU:
 		priv->mtu = g_value_get_uint (value);
diff --git a/src/dhcp-manager/nm-dhcp-client.c b/src/dhcp-manager/nm-dhcp-client.c
index 3490c0d23..9f66c9314 100644
--- a/src/dhcp-manager/nm-dhcp-client.c
+++ b/src/dhcp-manager/nm-dhcp-client.c
@@ -834,7 +834,7 @@ set_property (GObject *object, guint prop_id,
 	switch (prop_id) {
 	case PROP_IFACE:
 		/* construct-only */
-		priv->iface = g_strdup (g_value_get_string (value));
+		priv->iface = g_value_dup_string (value);
 		break;
 	case PROP_IFINDEX:
 		/* construct-only */