diff --git a/target/linux/ath79/image/Makefile b/target/linux/ath79/image/Makefile
index 1918a8a431..572da8c922 100644
--- a/target/linux/ath79/image/Makefile
+++ b/target/linux/ath79/image/Makefile
@@ -68,7 +68,11 @@ define Device/Default
   DEVICE_DTS = $$(SOC)_$(1)
   PROFILES = Default
   MTDPARTS :=
+ifeq ($(SUBTARGET),tiny)
+  BLOCKSIZE := 4k
+else
   BLOCKSIZE := 64k
+endif
   KERNEL := kernel-bin | append-dtb | lzma | uImage lzma
   KERNEL_INITRAMFS := kernel-bin | append-dtb | lzma | uImage lzma
   LOADER_KERNEL_MAGIC :=
diff --git a/target/linux/ath79/image/tiny-tp-link.mk b/target/linux/ath79/image/tiny-tp-link.mk
index 6fb76ed39d..c7070a21a1 100644
--- a/target/linux/ath79/image/tiny-tp-link.mk
+++ b/target/linux/ath79/image/tiny-tp-link.mk
@@ -3,7 +3,6 @@ include ./common-tp-link.mk
 define Device/tplink_rex5x
   $(Device/tplink-safeloader)
   SOC := qca9558
-  BLOCKSIZE := 4k
   IMAGE_SIZE := 7680k
   KERNEL_SIZE := 6016k
   DEVICE_PACKAGES := kmod-ath10k-ct-smallbuffers ath10k-firmware-qca988x-ct
diff --git a/target/linux/ath79/image/tiny.mk b/target/linux/ath79/image/tiny.mk
index 23d39b9df9..ec427c26e8 100644
--- a/target/linux/ath79/image/tiny.mk
+++ b/target/linux/ath79/image/tiny.mk
@@ -81,7 +81,6 @@ TARGET_DEVICES += dlink_dir-869-a1
 
 define Device/engenius_eap350-v1
   $(Device/senao_loader_okli)
-  BLOCKSIZE := 4k
   SOC := ar7242
   DEVICE_VENDOR := EnGenius
   DEVICE_MODEL := EAP350
@@ -95,7 +94,6 @@ TARGET_DEVICES += engenius_eap350-v1
 
 define Device/engenius_ecb350-v1
   $(Device/senao_loader_okli)
-  BLOCKSIZE := 4k
   SOC := ar7242
   DEVICE_VENDOR := EnGenius
   DEVICE_MODEL := ECB350
@@ -124,7 +122,6 @@ TARGET_DEVICES += engenius_enh202-v1
 define Device/nec_wf1200hp
   DEVICE_MODEL := Aterm WF1200HP
   SOC := ar9344
-  BLOCKSIZE := 4k
   IMAGE_SIZE := 7936k
   NEC_FW_TYPE := H047
   $(Device/nec-netbsd-aterm)
@@ -137,7 +134,6 @@ TARGET_DEVICES += nec_wf1200hp
 define Device/nec_wf1200hp2
   DEVICE_MODEL := Aterm WF1200HP2
   SOC := ar9344
-  BLOCKSIZE := 4k
   IMAGE_SIZE := 7936k
   NEC_FW_TYPE := H053
   $(Device/nec-netbsd-aterm)
@@ -150,7 +146,6 @@ TARGET_DEVICES += nec_wf1200hp2
 define Device/nec_wg600hp
   DEVICE_MODEL := Aterm WG600HP
   SOC := ar9344
-  BLOCKSIZE := 4k
   IMAGE_SIZE := 7936k
   NEC_FW_TYPE := H044
   $(Device/nec-netbsd-aterm)
@@ -160,7 +155,6 @@ TARGET_DEVICES += nec_wg600hp
 define Device/nec_wr8750n
   SOC := ar9344
   DEVICE_MODEL := Aterm WR8750N
-  BLOCKSIZE := 4k
   IMAGE_SIZE := 7936k
   NEC_FW_TYPE := H033a
   $(Device/nec-netbsd-aterm)
@@ -170,7 +164,6 @@ TARGET_DEVICES += nec_wr8750n
 define Device/nec_wr9500n
   SOC := ar9344
   DEVICE_MODEL := Aterm WR9500N
-  BLOCKSIZE := 4k
   IMAGE_SIZE := 16128k
   NEC_FW_TYPE := H033
   $(Device/nec-netbsd-aterm)
@@ -193,7 +186,6 @@ define Device/sitecom_wlr-7100
   DEVICE_VENDOR := Sitecom
   DEVICE_MODEL := WLR-7100
   DEVICE_PACKAGES := ath10k-firmware-qca988x-ct kmod-ath10k-ct-smallbuffers kmod-usb2
-  BLOCKSIZE := 4k
   IMAGES += factory.dlf
   IMAGE/factory.dlf := append-kernel | pad-to $$$$(BLOCKSIZE) | \
 	append-rootfs | pad-rootfs | check-size | \