diff --git a/target/linux/ramips/image/mt7620.mk b/target/linux/ramips/image/mt7620.mk
index 327df51e583..64dc0715eda 100644
--- a/target/linux/ramips/image/mt7620.mk
+++ b/target/linux/ramips/image/mt7620.mk
@@ -448,7 +448,7 @@ TARGET_DEVICES += head-weblink_hdrm200
 
 define Device/hiwifi_hc5661
   SOC := mt7620a
-  IMAGE_SIZE := 15872k
+  IMAGE_SIZE := 15808k
   DEVICE_VENDOR := HiWiFi
   DEVICE_MODEL := HC5661
   DEVICE_PACKAGES := kmod-sdhci-mt7620
@@ -458,7 +458,7 @@ TARGET_DEVICES += hiwifi_hc5661
 
 define Device/hiwifi_hc5761
   SOC := mt7620a
-  IMAGE_SIZE := 15872k
+  IMAGE_SIZE := 15808k
   DEVICE_VENDOR := HiWiFi
   DEVICE_MODEL := HC5761
   DEVICE_PACKAGES := kmod-mt76x0e kmod-usb2 kmod-usb-ohci kmod-sdhci-mt7620 \
@@ -469,7 +469,7 @@ TARGET_DEVICES += hiwifi_hc5761
 
 define Device/hiwifi_hc5861
   SOC := mt7620a
-  IMAGE_SIZE := 15872k
+  IMAGE_SIZE := 15808k
   DEVICE_VENDOR := HiWiFi
   DEVICE_MODEL := HC5861
   DEVICE_PACKAGES := kmod-mt76x2 kmod-usb2 kmod-usb-ohci kmod-sdhci-mt7620 \