diff --git a/sim/src/caps.rs b/sim/src/caps.rs
index 35ab14f..639894b 100644
--- a/sim/src/caps.rs
+++ b/sim/src/caps.rs
@@ -1,13 +1,13 @@
 // Query the bootloader's capabilities.
 
 #[repr(u32)]
-#[derive(Copy, Clone, Eq, PartialEq)]
+#[derive(Copy, Clone, Debug, Eq, PartialEq)]
 #[allow(unused)]
 pub enum Caps {
     RSA2048              = (1 << 0),
     EcdsaP224            = (1 << 1),
     EcdsaP256            = (1 << 2),
-    SwapUpgrade          = (1 << 3),
+    SwapUsingScratch     = (1 << 3),
     OverwriteUpgrade     = (1 << 4),
     EncRsa               = (1 << 5),
     EncKw                = (1 << 6),
@@ -15,6 +15,7 @@
     RSA3072              = (1 << 8),
     Ed25519              = (1 << 9),
     EncEc256             = (1 << 10),
+    SwapUsingMove        = (1 << 11),
 }
 
 impl Caps {
diff --git a/sim/src/image.rs b/sim/src/image.rs
index cfb5198..035370f 100644
--- a/sim/src/image.rs
+++ b/sim/src/image.rs
@@ -362,6 +362,10 @@
         self.verify_dep_images(&flash, deps)
     }
 
+    fn is_swap_upgrade(&self) -> bool {
+        Caps::SwapUsingScratch.present() || Caps::SwapUsingMove.present()
+    }
+
     pub fn run_basic_revert(&self) -> bool {
         if Caps::OverwriteUpgrade.present() {
             return false;
@@ -370,7 +374,7 @@
         let mut fails = 0;
 
         // FIXME: this test would also pass if no swap is ever performed???
-        if Caps::SwapUpgrade.present() {
+        if self.is_swap_upgrade() {
             for count in 2 .. 5 {
                 info!("Try revert: {}", count);
                 let flash = self.try_revert(count);
@@ -410,7 +414,7 @@
                 fails += 1;
             }
 
-            if Caps::SwapUpgrade.present() {
+            if self.is_swap_upgrade() {
                 if !self.verify_images(&flash, 1, 0) {
                     warn!("Secondary slot FAIL at step {} of {}",
                           i, total_flash_ops);
@@ -434,7 +438,7 @@
         info!("Random interruptions at reset points={:?}", total_counts);
 
         let primary_slot_ok = self.verify_images(&flash, 0, 1);
-        let secondary_slot_ok = if Caps::SwapUpgrade.present() {
+        let secondary_slot_ok = if self.is_swap_upgrade() {
             // TODO: This result is ignored.
             self.verify_images(&flash, 1, 0)
         } else {
@@ -472,7 +476,7 @@
 
         let mut fails = 0;
 
-        if Caps::SwapUpgrade.present() {
+        if self.is_swap_upgrade() {
             for i in 1 .. self.total_count.unwrap() {
                 info!("Try interruption at {}", i);
                 if self.try_revert_with_fail_at(i) {