diff --git a/target/linux/ath79/Makefile b/target/linux/ath79/Makefile
index dd57d9fed9..20dae789af 100644
--- a/target/linux/ath79/Makefile
+++ b/target/linux/ath79/Makefile
@@ -9,6 +9,7 @@ SUBTARGETS:=generic mikrotik nand tiny
 FEATURES:=ramdisk squashfs usbgadget
 
 KERNEL_PATCHVER:=5.10
+KERNEL_TESTING_PATCHVER:=5.15
 
 include $(INCLUDE_DIR)/target.mk
 
diff --git a/target/linux/ath79/generic/target.mk b/target/linux/ath79/generic/target.mk
index af330b09b8..4e53c89260 100644
--- a/target/linux/ath79/generic/target.mk
+++ b/target/linux/ath79/generic/target.mk
@@ -2,8 +2,6 @@ BOARDNAME:=Generic
 
 DEFAULT_PACKAGES += wpad-basic-wolfssl
 
-KERNEL_TESTING_PATCHVER:=5.15
-
 define Target/Description
 	Build firmware images for generic Atheros AR71xx/AR913x/AR934x based boards.
 endef
diff --git a/target/linux/ath79/mikrotik/target.mk b/target/linux/ath79/mikrotik/target.mk
index 697aa003c8..f5df904487 100644
--- a/target/linux/ath79/mikrotik/target.mk
+++ b/target/linux/ath79/mikrotik/target.mk
@@ -5,8 +5,6 @@ IMAGES_DIR := ../../..
 
 DEFAULT_PACKAGES += wpad-basic-wolfssl
 
-KERNEL_TESTING_PATCHVER:=5.15
-
 define Target/Description
 	Build firmware images for MikroTik devices based on Qualcomm Atheros
 	MIPS SoCs (AR71xx, AR72xx, AR91xx, AR93xx, QCA95xx).
diff --git a/target/linux/ath79/nand/target.mk b/target/linux/ath79/nand/target.mk
index 12694b6013..7ea9b57f45 100644
--- a/target/linux/ath79/nand/target.mk
+++ b/target/linux/ath79/nand/target.mk
@@ -4,8 +4,6 @@ FEATURES += nand
 
 DEFAULT_PACKAGES += wpad-basic-wolfssl
 
-KERNEL_TESTING_PATCHVER:=5.15
-
 define Target/Description
 	Firmware for boards using Qualcomm Atheros, MIPS-based SoCs
 	in the ar72xx and subsequent series, with support for NAND flash
diff --git a/target/linux/ath79/tiny/target.mk b/target/linux/ath79/tiny/target.mk
index 8241aacd3a..28e02f7a67 100644
--- a/target/linux/ath79/tiny/target.mk
+++ b/target/linux/ath79/tiny/target.mk
@@ -3,8 +3,6 @@ FEATURES += low_mem small_flash
 
 DEFAULT_PACKAGES += wpad-basic-wolfssl
 
-KERNEL_TESTING_PATCHVER:=5.15
-
 define Target/Description
 	Build firmware images for Atheros AR71xx/AR913x/AR934x based boards with small flash
 endef