diff --git a/install/install.cpp b/install/install.cpp
index 83f3cad..044856b 100644
--- a/install/install.cpp
+++ b/install/install.cpp
@@ -551,7 +551,9 @@
   } else {
     LOG(FATAL) << "Invalid status code " << status;
   }
-  PerformPowerwashIfRequired(zip, device);
+  if (package_is_ab) {
+    PerformPowerwashIfRequired(zip, device);
+  }
 
   return INSTALL_SUCCESS;
 }