diff --git a/platformio_tasmota_env.ini b/platformio_tasmota_env.ini
index 3d08d5cd6..4a447da82 100644
--- a/platformio_tasmota_env.ini
+++ b/platformio_tasmota_env.ini
@@ -36,7 +36,7 @@ build_flags = ${common.build_flags} -DFIRMWARE_DISPLAYS
 build_flags = ${common.build_flags} ${irremoteesp_full.build_flags} -DFIRMWARE_IR
 
 [env:tasmota-ircustom]
-build_flags = ${common.build_flags} ${irremoteesp_full.build_flags}
+build_flags = ${common.build_flags} ${irremoteesp_full.build_flags} -DFIRMWARE_IR_CUSTOM
 
 [env:tasmota-BG]
 build_flags = ${common.build_flags} -DMY_LANGUAGE=bg_BG
diff --git a/platformio_tasmota_env32.ini b/platformio_tasmota_env32.ini
index 4398dcb04..6d6a0ebc0 100644
--- a/platformio_tasmota_env32.ini
+++ b/platformio_tasmota_env32.ini
@@ -50,7 +50,7 @@ build_flags             = ${common32.build_flags} ${irremoteesp_full.build_flags
 
 [env:tasmota32-ircustom]
 extends = env:tasmota32
-build_flags             = ${common32.build_flags} ${irremoteesp_full.build_flags}
+build_flags             = ${common32.build_flags} ${irremoteesp_full.build_flags} -DFIRMWARE_IR_CUSTOM
 
 [env:tasmota32-BG]
 extends = env:tasmota32