diff --git a/conf/machine/am335x-nmhw21.conf b/conf/machine/am335x-nmhw21.conf
index 4821188..8a9a171 100644
--- a/conf/machine/am335x-nmhw21.conf
+++ b/conf/machine/am335x-nmhw21.conf
@@ -10,7 +10,6 @@ KERNEL_DEFCONFIG ??= "am335x-nmhw21_defconfig"
 KERNEL_DEVICETREE = "am335x-nmhw21-prod1.dtb \
     "
 
-KERNEL_IMAGETYPE = "zImage"
-KERNEL_IMAGETYPES = "fitImage zImage"
+KERNEL_IMAGETYPE = "fitImage"
 
 PREFERRED_PROVIDER_virtual/bootloader = "u-boot-am335x-nmhw21"
diff --git a/conf/machine/am335x-nrhw16.conf b/conf/machine/am335x-nrhw16.conf
index 89aa118..2a15da1 100644
--- a/conf/machine/am335x-nrhw16.conf
+++ b/conf/machine/am335x-nrhw16.conf
@@ -13,7 +13,6 @@ KERNEL_DEVICETREE = "am335x-nrhw16.dtb \
     am335x-nrhw16-prod4.dtb \
     am335x-nrhw16-prod5.dtb \
     "
-KERNEL_IMAGETYPE = "zImage"
-KERNEL_IMAGETYPES = "fitImage zImage"
+KERNEL_IMAGETYPE = "fitImage"
 
 PREFERRED_PROVIDER_virtual/bootloader = "u-boot-am335x-nrhw16-v2"
diff --git a/conf/machine/am335x-nrhw20.conf b/conf/machine/am335x-nrhw20.conf
index ed992a2..aee150d 100644
--- a/conf/machine/am335x-nrhw20.conf
+++ b/conf/machine/am335x-nrhw20.conf
@@ -9,9 +9,7 @@ MACHINE_EXTRA_RRECOMMENDS = " kernel-modules kernel-devicetree"
 KERNEL_DEFCONFIG ??= "am335x-nrhw20_defconfig"
 KERNEL_DEVICETREE = "am335x-nrhw20-prod1.dtb \
     "
-
-KERNEL_IMAGETYPE = "zImage"
-KERNEL_IMAGETYPES = "fitImage zImage"
+KERNEL_IMAGETYPE = "fitImage"
 
 PREFERRED_PROVIDER_virtual/bootloader = "u-boot-am335x-nrhw20-v1"
 
diff --git a/conf/machine/armada-385-nrhw18.conf b/conf/machine/armada-385-nrhw18.conf
index d158ae3..11e58cb 100644
--- a/conf/machine/armada-385-nrhw18.conf
+++ b/conf/machine/armada-385-nrhw18.conf
@@ -9,8 +9,7 @@ MACHINE_EXTRA_RRECOMMENDS = " kernel-modules kernel-devicetree"
 
 KERNEL_DEFCONFIG ??= "armada-385-nrhw18_defconfig"
 KERNEL_DEVICETREE = "armada-385-nrhw18-prod4.dtb"
-KERNEL_IMAGETYPE = "zImage"
-KERNEL_IMAGETYPES = "fitImage zImage"
+KERNEL_IMAGETYPE = "fitImage"
 
 KERNEL_MODULE_PROBECONF += "ath10k_pci"
 module_conf_ath10k_pci = "options ath10k_pci irq_mode=1"