diff --git a/update_attempter.cc b/update_attempter.cc
index f47a63e..50c72f0 100644
--- a/update_attempter.cc
+++ b/update_attempter.cc
@@ -130,7 +130,8 @@
                                  CertificateChecker* cert_checker)
     : processor_(new ActionProcessor()),
       system_state_(system_state),
-      cert_checker_(cert_checker) {}
+      cert_checker_(cert_checker),
+      is_install_(false) {}
 
 UpdateAttempter::~UpdateAttempter() {
   // CertificateChecker might not be initialized in unittests.
@@ -703,6 +704,7 @@
 }
 
 bool UpdateAttempter::Rollback(bool powerwash) {
+  is_install_ = false;
   if (!CanRollback()) {
     return false;
   }