diff --git a/SConscript.boardloader b/SConscript.boardloader
index 6d1289f034..4bd4afc74a 100644
--- a/SConscript.boardloader
+++ b/SConscript.boardloader
@@ -122,7 +122,6 @@ env.Replace(
     ] + CPPPATH_MOD,
     CPPDEFINES=[
         'TREZOR_MODEL_T',
-        'MCU_SERIES_F4',
         'STM32F427xx',
         'USE_HAL_DRIVER',
         ('STM32_HAL_H', '"<stm32f4xx.h>"'),
diff --git a/SConscript.bootloader b/SConscript.bootloader
index 9ae742d328..4f808a99d5 100644
--- a/SConscript.bootloader
+++ b/SConscript.bootloader
@@ -144,7 +144,6 @@ env.Replace(
     ] + CPPPATH_MOD,
     CPPDEFINES=[
         'TREZOR_MODEL_T',
-        'MCU_SERIES_F4',
         'STM32F427xx',
         'USE_HAL_DRIVER',
         ('STM32_HAL_H', '"<stm32f4xx.h>"'),
diff --git a/SConscript.firmware b/SConscript.firmware
index 6d660631fa..4022c48ea5 100644
--- a/SConscript.firmware
+++ b/SConscript.firmware
@@ -333,7 +333,6 @@ env.Replace(
     ] + CPPPATH_MOD,
     CPPDEFINES=[
         'TREZOR_MODEL_T',
-        'MCU_SERIES_F4',
         'STM32F427xx',
         'USE_HAL_DRIVER',
         ('STM32_HAL_H', '"<stm32f4xx.h>"'),
diff --git a/SConscript.prodtest b/SConscript.prodtest
index 27c5d0f8c8..6a7e94c961 100644
--- a/SConscript.prodtest
+++ b/SConscript.prodtest
@@ -111,7 +111,6 @@ env.Replace(
     ] + CPPPATH_MOD,
     CPPDEFINES=[
         'TREZOR_MODEL_T',
-        'MCU_SERIES_F4',
         'STM32F427xx',
         ('STM32_HAL_H', '"<stm32f4xx_hal.h>"'),
     ] + CPPDEFINES_MOD,
diff --git a/SConscript.reflash b/SConscript.reflash
index 57c4acae19..c4c1ef1082 100644
--- a/SConscript.reflash
+++ b/SConscript.reflash
@@ -111,7 +111,6 @@ env.Replace(
     ] + CPPPATH_MOD,
     CPPDEFINES=[
         'TREZOR_MODEL_T',
-        'MCU_SERIES_F4',
         'STM32F427xx',
         ('STM32_HAL_H', '"<stm32f4xx_hal.h>"'),
     ] + CPPDEFINES_MOD,