diff --git a/recovery_main.cpp b/recovery_main.cpp
index 9215ddf..8ae0ba2 100644
--- a/recovery_main.cpp
+++ b/recovery_main.cpp
@@ -470,6 +470,13 @@
     device->RemoveMenuItemForAction(Device::WIPE_CACHE);
   }
 
+  if (android::base::GetBoolProperty("ro.build.ab_update", false)) {
+    // There's not much point in formatting the active slot's system partition
+    // because ROMs are flashed to the inactive slot. Removing the menu option
+    // prevents users from accidentally trashing a functioning ROM.
+    device->RemoveMenuItemForAction(Device::WIPE_SYSTEM);
+  }
+
   if (!android::base::GetBoolProperty("ro.boot.dynamic_partitions", false) &&
       !android::base::GetBoolProperty("ro.fastbootd.available", false)) {
     device->RemoveMenuItemForAction(Device::ENTER_FASTBOOT);