9 files changed, 13 insertions, 1 deletions
diff --git a/keyboards/clueboard/60/info.json b/keyboards/clueboard/60/info.json
index 1698d221d3..6e0d90fe1d 100644
--- a/keyboards/clueboard/60/info.json
+++ b/keyboards/clueboard/60/info.json
@@ -5,6 +5,7 @@
   "debounce": 6,
   "processor": "STM32F303",
   "board": "QMK_PROTON_C",
+  "bootloader": "stm32-dfu",
   "diode_direction": "COL2ROW",
   "features": {
     "audio": true,
diff --git a/keyboards/clueboard/66/rev4/info.json b/keyboards/clueboard/66/rev4/info.json
index f1f1ae4dec..b40abf402f 100644
--- a/keyboards/clueboard/66/rev4/info.json
+++ b/keyboards/clueboard/66/rev4/info.json
@@ -5,6 +5,7 @@
   "debounce": 5,
   "processor": "STM32F303",
   "board": "QMK_PROTON_C",
+  "bootloader": "stm32-dfu",
   "diode_direction": "COL2ROW",
   "features": {
     "audio": true,
diff --git a/keyboards/clueboard/66_hotswap/gen1/info.json b/keyboards/clueboard/66_hotswap/gen1/info.json
index 5e0e5b8aca..cf6288b545 100644
--- a/keyboards/clueboard/66_hotswap/gen1/info.json
+++ b/keyboards/clueboard/66_hotswap/gen1/info.json
@@ -5,6 +5,7 @@
   "debounce": 5,
   "processor": "STM32F303",
   "board": "QMK_PROTON_C",
+  "bootloader": "stm32-dfu",
   "diode_direction": "COL2ROW",
   "features": {
     "audio": true,
diff --git a/keyboards/clueboard/california/info.json b/keyboards/clueboard/california/info.json
index e40b2338cd..24a9399923 100644
--- a/keyboards/clueboard/california/info.json
+++ b/keyboards/clueboard/california/info.json
@@ -4,6 +4,7 @@
     "maintainer": "skullydazed",
     "processor": "STM32F303",
     "board": "QMK_PROTON_C",
+    "bootloader": "stm32-dfu",
     "matrix_pins": {
         "direct": [
             ["A10", "A9"],
diff --git a/keyboards/edi/hardlight/mk2/rules.mk b/keyboards/edi/hardlight/mk2/rules.mk
index 5ffab4a55e..b3ff36943f 100644
--- a/keyboards/edi/hardlight/mk2/rules.mk
+++ b/keyboards/edi/hardlight/mk2/rules.mk
@@ -2,7 +2,7 @@
 MCU = STM32F072
 
 # Bootloader selection
-Bootloader = stm32-dfu
+BOOTLOADER = stm32-dfu
 
 # Wildcard to allow APM32 MCU
 DFU_SUFFIX_ARGS = -v FFFF -p FFFF
diff --git a/keyboards/ez_maker/directpins/proton_c/info.json b/keyboards/ez_maker/directpins/proton_c/info.json
index a284e5c41f..e3d000424a 100644
--- a/keyboards/ez_maker/directpins/proton_c/info.json
+++ b/keyboards/ez_maker/directpins/proton_c/info.json
@@ -5,6 +5,7 @@
     "debounce": 5,
     "processor": "STM32F303",
     "board": "QMK_PROTON_C",
+    "bootloader": "stm32-dfu",
     "features": {
         "bootmagic": true,
         "extrakey": true,
diff --git a/keyboards/forever65/info.json b/keyboards/forever65/info.json
index 6cb2442a08..9f5a3539e3 100644
--- a/keyboards/forever65/info.json
+++ b/keyboards/forever65/info.json
@@ -3,6 +3,7 @@
     "manufacturer": "Nightingale Studios",
     "maintainer": "zvecr",
     "processor": "STM32F072",
+    "bootloader": "stm32-dfu",
     "diode_direction": "COL2ROW",
     "matrix_pins": {
         "cols": ["A3", "F1", "F0", "C15", "C14", "C13", "B11", "B10", "B2", "B1", "B0", "A7", "A5", "A6", "A4", "B5"],
diff --git a/keyboards/mechlovin/mechlovin9/rev1/rules.mk b/keyboards/mechlovin/mechlovin9/rev1/rules.mk
index 1333470e59..927204fc74 100644
--- a/keyboards/mechlovin/mechlovin9/rev1/rules.mk
+++ b/keyboards/mechlovin/mechlovin9/rev1/rules.mk
@@ -2,6 +2,9 @@
 MCU = STM32F303
 BOARD = QMK_PROTON_C
 
+# Bootloader selection
+BOOTLOADER = stm32-dfu
+
 # Build Options
 #   change yes to no to disable
 #
diff --git a/keyboards/rgbkb/mun/rules.mk b/keyboards/rgbkb/mun/rules.mk
index c7e6594ead..d2ad9cdcc2 100644
--- a/keyboards/rgbkb/mun/rules.mk
+++ b/keyboards/rgbkb/mun/rules.mk
@@ -1,6 +1,9 @@
 # MCU name
 MCU = STM32F303
 
+# Bootloader selection
+BOOTLOADER = stm32-dfu
+
 # Touch encoder needs
 SRC += ../common/touch_encoder.c
 SRC += ../common/common_oled.c