diff --git a/client/dpp.c b/client/dpp.c
index cd05a33b..a659f545 100644
--- a/client/dpp.c
+++ b/client/dpp.c
@@ -284,6 +284,11 @@ static enum cmd_status cmd_show(const char *device_name,
 			device_proxy_find(device_name, IWD_DPP_INTERFACE);
 	char *caption = l_strdup_printf("%s: %s", "DPP", device_name);
 
+	if (!proxy) {
+		display("No DPP interface on device: '%s'\n", device_name);
+		return CMD_STATUS_INVALID_VALUE;
+	}
+
 	proxy_properties_display(proxy, caption, MARGIN, 20, 47);
 	l_free(caption);