diff --git a/buildroot/share/PlatformIO/boards/marlin_STM32H723ZE.json b/buildroot/share/PlatformIO/boards/marlin_STM32H723ZE.json
index 8525793c4e01..f4bb75b5dae9 100644
--- a/buildroot/share/PlatformIO/boards/marlin_STM32H723ZE.json
+++ b/buildroot/share/PlatformIO/boards/marlin_STM32H723ZE.json
@@ -6,7 +6,7 @@
     "f_cpu": "550000000L",
     "mcu": "stm32h723zet6",
     "product_line": "STM32H723xx",
-    "variant": "MARLIN_H723Zx"
+    "variant": "MARLIN_H723ZE"
   },
   "connectivity": [
     "can",
diff --git a/buildroot/share/PlatformIO/boards/marlin_STM32H743VI.json b/buildroot/share/PlatformIO/boards/marlin_STM32H743VI.json
index 4ec34e5b3502..56e853cad43e 100644
--- a/buildroot/share/PlatformIO/boards/marlin_STM32H743VI.json
+++ b/buildroot/share/PlatformIO/boards/marlin_STM32H743VI.json
@@ -6,7 +6,7 @@
     "f_cpu": "480000000L",
     "mcu": "stm32h743vit6",
     "product_line": "STM32H743xx",
-    "variant": "MARLIN_H743Vx"
+    "variant": "MARLIN_H743VI"
   },
   "connectivity": [
     "can",
diff --git a/buildroot/share/PlatformIO/variants/MARLIN_H723Zx/PeripheralPins.c b/buildroot/share/PlatformIO/variants/MARLIN_H723ZE/PeripheralPins.c
similarity index 100%
rename from buildroot/share/PlatformIO/variants/MARLIN_H723Zx/PeripheralPins.c
rename to buildroot/share/PlatformIO/variants/MARLIN_H723ZE/PeripheralPins.c
diff --git a/buildroot/share/PlatformIO/variants/MARLIN_H723Zx/PinNamesVar.h b/buildroot/share/PlatformIO/variants/MARLIN_H723ZE/PinNamesVar.h
similarity index 100%
rename from buildroot/share/PlatformIO/variants/MARLIN_H723Zx/PinNamesVar.h
rename to buildroot/share/PlatformIO/variants/MARLIN_H723ZE/PinNamesVar.h
diff --git a/buildroot/share/PlatformIO/variants/MARLIN_H723Zx/ldscript.ld b/buildroot/share/PlatformIO/variants/MARLIN_H723ZE/ldscript.ld
similarity index 100%
rename from buildroot/share/PlatformIO/variants/MARLIN_H723Zx/ldscript.ld
rename to buildroot/share/PlatformIO/variants/MARLIN_H723ZE/ldscript.ld
diff --git a/buildroot/share/PlatformIO/variants/MARLIN_H723Zx/variant_MARLIN_STM32H723ZX.cpp b/buildroot/share/PlatformIO/variants/MARLIN_H723ZE/variant_MARLIN_STM32H723ZE.cpp
similarity index 100%
rename from buildroot/share/PlatformIO/variants/MARLIN_H723Zx/variant_MARLIN_STM32H723ZX.cpp
rename to buildroot/share/PlatformIO/variants/MARLIN_H723ZE/variant_MARLIN_STM32H723ZE.cpp
diff --git a/buildroot/share/PlatformIO/variants/MARLIN_H723Zx/variant_MARLIN_STM32H723ZX.h b/buildroot/share/PlatformIO/variants/MARLIN_H723ZE/variant_MARLIN_STM32H723ZE.h
similarity index 100%
rename from buildroot/share/PlatformIO/variants/MARLIN_H723Zx/variant_MARLIN_STM32H723ZX.h
rename to buildroot/share/PlatformIO/variants/MARLIN_H723ZE/variant_MARLIN_STM32H723ZE.h
diff --git a/buildroot/share/PlatformIO/variants/MARLIN_H743Vx/PeripheralPins.c b/buildroot/share/PlatformIO/variants/MARLIN_H743VI/PeripheralPins.c
similarity index 100%
rename from buildroot/share/PlatformIO/variants/MARLIN_H743Vx/PeripheralPins.c
rename to buildroot/share/PlatformIO/variants/MARLIN_H743VI/PeripheralPins.c
diff --git a/buildroot/share/PlatformIO/variants/MARLIN_H743Vx/PinNamesVar.h b/buildroot/share/PlatformIO/variants/MARLIN_H743VI/PinNamesVar.h
similarity index 100%
rename from buildroot/share/PlatformIO/variants/MARLIN_H743Vx/PinNamesVar.h
rename to buildroot/share/PlatformIO/variants/MARLIN_H743VI/PinNamesVar.h
diff --git a/buildroot/share/PlatformIO/variants/MARLIN_H743Vx/ldscript.ld b/buildroot/share/PlatformIO/variants/MARLIN_H743VI/ldscript.ld
similarity index 100%
rename from buildroot/share/PlatformIO/variants/MARLIN_H743Vx/ldscript.ld
rename to buildroot/share/PlatformIO/variants/MARLIN_H743VI/ldscript.ld
diff --git a/buildroot/share/PlatformIO/variants/MARLIN_H743Vx/variant_MARLIN_STM32H743VX.cpp b/buildroot/share/PlatformIO/variants/MARLIN_H743VI/variant_MARLIN_STM32H743VI.cpp
similarity index 100%
rename from buildroot/share/PlatformIO/variants/MARLIN_H743Vx/variant_MARLIN_STM32H743VX.cpp
rename to buildroot/share/PlatformIO/variants/MARLIN_H743VI/variant_MARLIN_STM32H743VI.cpp
diff --git a/buildroot/share/PlatformIO/variants/MARLIN_H743Vx/variant_MARLIN_STM32H743VX.h b/buildroot/share/PlatformIO/variants/MARLIN_H743VI/variant_MARLIN_STM32H743VI.h
similarity index 100%
rename from buildroot/share/PlatformIO/variants/MARLIN_H743Vx/variant_MARLIN_STM32H743VX.h
rename to buildroot/share/PlatformIO/variants/MARLIN_H743VI/variant_MARLIN_STM32H743VI.h