diff --git a/init/reboot.cpp b/init/reboot.cpp
index 2f88121..908c67f 100644
--- a/init/reboot.cpp
+++ b/init/reboot.cpp
@@ -162,7 +162,7 @@
  */
 static bool FindPartitionsToUmount(std::vector<MountEntry>* blockDevPartitions,
                                    std::vector<MountEntry>* emulatedPartitions, bool dump) {
-    std::unique_ptr<std::FILE, int (*)(std::FILE*)> fp(setmntent("/proc/mounts", "r"), endmntent);
+    std::unique_ptr<std::FILE, int (*)(std::FILE*)> fp(setmntent("/proc/mounts", "re"), endmntent);
     if (fp == nullptr) {
         PLOG(ERROR) << "Failed to open /proc/mounts";
         return false;