diff --git a/target/linux/realtek/rtl931x/config-6.6 b/target/linux/realtek/rtl931x/config-6.6
index 02f7f0738c2..751547cb914 100644
--- a/target/linux/realtek/rtl931x/config-6.6
+++ b/target/linux/realtek/rtl931x/config-6.6
@@ -172,7 +172,7 @@ CONFIG_NET_SELFTESTS=y
 CONFIG_NET_XGRESS=y
 CONFIG_NO_EXCEPT_FILL=y
 CONFIG_NO_GENERIC_PCI_IOPORT_MAP=y
-CONFIG_NR_CPUS=2
+CONFIG_NR_CPUS=4
 CONFIG_NVMEM=y
 CONFIG_NVMEM_LAYOUTS=y
 CONFIG_OF=y