diff --git a/boot/zephyr/include/sysflash/sysflash.h b/boot/zephyr/include/sysflash/sysflash.h
index 8cbd4869c..500a9d3a0 100644
--- a/boot/zephyr/include/sysflash/sysflash.h
+++ b/boot/zephyr/include/sysflash/sysflash.h
@@ -6,8 +6,8 @@
 #if USE_PARTITION_MANAGER
 #include <pm_config.h>
 
-#define FLASH_AREA_IMAGE_PRIMARY    PM_MCUBOOT_PARTITIONS_PRIMARY_ID
-#define FLASH_AREA_IMAGE_SECONDARY  PM_MCUBOOT_PARTITIONS_SECONDARY_ID
+#define FLASH_AREA_IMAGE_PRIMARY    PM_MCUBOOT_PRIMARY_ID
+#define FLASH_AREA_IMAGE_SECONDARY  PM_MCUBOOT_SECONDARY_ID
 #define FLASH_AREA_IMAGE_SCRATCH    PM_MCUBOOT_SCRATCH_ID
 
 #else
diff --git a/boot/zephyr/pm.yml b/boot/zephyr/pm.yml
index dad68bf12..8788652bf 100644
--- a/boot/zephyr/pm.yml
+++ b/boot/zephyr/pm.yml
@@ -1,27 +1,31 @@
-# The size of this partition is defined by the kconfig symbol
-# CONFIG_PM_PARTITION_SIZE_MCUBOOT
+#include <autoconf.h>
+
 mcuboot:
+  size: CONFIG_PM_PARTITION_SIZE_MCUBOOT
   placement:
-    # MCUboot must be placed in front of 'mcuboot_pad'.
-    before: [mcuboot_pad]
+    before: [mcuboot_primary]
+
+mcuboot_primary_app:
+  # All images to be placed in MCUboot's slot 0 should be placed in this
+  # partition
+  span: [app]
 
-mcuboot_partitions:
-  # Define a set of sub-partitions which spans over 'mcuboot_pad', 'spm' and 
-  # 'app' if both are present. If only 'app' is present, then these partitions
-  # will only span across that partition.
-  # The sub partitions share the size of the parent partition(s) equally.
-  sub_partitions: [primary, secondary]
-  span: [mcuboot_pad, spm, app]
+mcuboot_primary:
+  span: [mcuboot_pad, mcuboot_primary_app]
+
+mcuboot_secondary:
+  share_size: [mcuboot_primary]
+  placement:
+    after:
+      [mcuboot_primary]
 
-# The size of this partition is defined by the kconfig symbol
-# CONFIG_PM_PARTITION_SIZE_MCUBOOT_SCRATCH
 mcuboot_scratch:
+  size: CONFIG_PM_PARTITION_SIZE_MCUBOOT_SCRATCH
   placement:
     after: [app]
 
-# The size of this partition is defined by the kconfig symbol
-# CONFIG_PM_PARTITION_SIZE_MCUBOOT_STORAGE
 mcuboot_storage:
+  size: CONFIG_PM_PARTITION_SIZE_MCUBOOT_STORAGE
   placement:
     after: [mcuboot_scratch]
 
@@ -29,5 +33,6 @@ mcuboot_storage:
 mcuboot_pad:
     # MCUboot pad must be placed before the 'spm' partition if that is present.
     # If 'spm' partition is not present, it must be placed before the 'app'.
+  size: CONFIG_PM_PARTITION_SIZE_MCUBOOT_PAD
   placement:
-    before: [spm, app]
+    before: [mcuboot_primary_app]