diff --git a/target/linux/octeon/image/Makefile b/target/linux/octeon/image/Makefile
index fa845a24991..8edc1942fd3 100644
--- a/target/linux/octeon/image/Makefile
+++ b/target/linux/octeon/image/Makefile
@@ -42,7 +42,8 @@ define Device/itus_shield-router
 endef
 TARGET_DEVICES += itus_shield-router
 
-ER_CMDLINE:=-mtdparts=phys_mapped_flash:640k(boot0)ro,640k(boot1)ro,64k(eeprom)ro root=/dev/mmcblk0p2 rootfstype=squashfs,ext4 rootwait
+# Disable PCIe on ER as it doesn't have PCIe peripherals and some devices lock up on initialization
+ER_CMDLINE:=-mtdparts=phys_mapped_flash:640k(boot0)ro,640k(boot1)ro,64k(eeprom)ro root=/dev/mmcblk0p2 rootfstype=squashfs,ext4 rootwait pcie_octeon.pcie_disable=1
 define Device/ubnt_edgerouter
   DEVICE_VENDOR := Ubiquiti
   DEVICE_MODEL := EdgeRouter