diff --git a/test/test_mqtt/MQTT.cpp b/test/test_mqtt/MQTT.cpp
index 29945419b..32d81f6b4 100644
--- a/test/test_mqtt/MQTT.cpp
+++ b/test/test_mqtt/MQTT.cpp
@@ -27,6 +27,7 @@
 #include <utility>
 #include <variant>
 
+#if defined(UNIT_TEST)
 #define IS_RUNNING_TESTS 1
 #else
 #define IS_RUNNING_TESTS 0