diff --git a/src/modbus.h b/src/modbus.h
index a5e0ed06d..5e11f4061 100644
--- a/src/modbus.h
+++ b/src/modbus.h
@@ -13,7 +13,7 @@
 #include <map>
 #include <utility>
 
-#if defined(EMSESP_STANDALONE) || defined(EMSESP_TEST)
+#if defined(EMSESP_STANDALONE)
 
 #include <modbus_test.h>