diff --git a/target/linux/mediatek/image/filogic.mk b/target/linux/mediatek/image/filogic.mk
index aa844671e3..74eaf06ea9 100644
--- a/target/linux/mediatek/image/filogic.mk
+++ b/target/linux/mediatek/image/filogic.mk
@@ -468,7 +468,7 @@ endef
 TARGET_DEVICES += cmcc_rax3000m
 
 define Device/comfast_cf-e393ax
-  DEVICE_VENDOR := Comfast
+  DEVICE_VENDOR := COMFAST
   DEVICE_MODEL := CF-E393AX
   DEVICE_DTS := mt7981a-comfast-cf-e393ax
   DEVICE_DTS_DIR := ../dts
diff --git a/target/linux/ramips/image/mt7621.mk b/target/linux/ramips/image/mt7621.mk
index 44672a9542..3f3d5a0e2b 100644
--- a/target/linux/ramips/image/mt7621.mk
+++ b/target/linux/ramips/image/mt7621.mk
@@ -604,7 +604,7 @@ define Device/comfast_cf-e390ax
   $(Device/dsa-migration)
   $(Device/uimage-lzma-loader)
   IMAGE_SIZE := 15808k
-  DEVICE_VENDOR := ComFast
+  DEVICE_VENDOR := COMFAST
   DEVICE_MODEL := CF-E390AX
   DEVICE_PACKAGES := kmod-mt7915-firmware -uboot-envtools
   IMAGES += factory.bin
@@ -618,7 +618,7 @@ define Device/comfast_cf-ew72-v2
     $(Device/dsa-migration)
     $(Device/uimage-lzma-loader)
     IMAGE_SIZE := 15808k
-    DEVICE_VENDOR := ComFast
+    DEVICE_VENDOR := COMFAST
     DEVICE_MODEL := CF-EW72 V2
     DEVICE_PACKAGES := kmod-mt7603 kmod-mt7615e kmod-mt7663-firmware-ap \
         -uboot-envtools
diff --git a/target/linux/ramips/image/mt76x8.mk b/target/linux/ramips/image/mt76x8.mk
index 2ea948a5f9..7b360c6088 100644
--- a/target/linux/ramips/image/mt76x8.mk
+++ b/target/linux/ramips/image/mt76x8.mk
@@ -135,7 +135,7 @@ TARGET_DEVICES += buffalo_wcr-1166ds
 define Device/comfast_cf-wr617ac
   IMAGE_SIZE := 7872k
   DTS := CF-WR617AC
-  DEVICE_VENDOR := Comfast
+  DEVICE_VENDOR := COMFAST
   DEVICE_MODEL := CF-WR617AC
   DEVICE_PACKAGES := kmod-mt76x2 kmod-rt2800-pci
 endef