diff --git a/target/linux/rockchip/Makefile b/target/linux/rockchip/Makefile
index 8f6c908ba..5b08bbcb8 100644
--- a/target/linux/rockchip/Makefile
+++ b/target/linux/rockchip/Makefile
@@ -8,7 +8,7 @@ FEATURES:=ext4 audio usb usbgadget display gpio fpu pci pcie rootfs-part boot-pa
 SUBTARGETS:=armv8
 
 KERNEL_PATCHVER=5.4
-KERNEL_TESTING_PATCHVER=6.0
+KERNEL_TESTING_PATCHVER=5.15
 
 define Target/Description
 	Build firmware image for Rockchip SoC devices.