diff --git a/VolumeManager.cpp b/VolumeManager.cpp
index 98cb060..d8b1e32 100644
--- a/VolumeManager.cpp
+++ b/VolumeManager.cpp
@@ -806,7 +806,8 @@
 #ifdef __ANDROID_DEBUGGABLE__
              !StartsWith(test, "/mnt/scratch") &&
 #endif
-             !StartsWith(test, "/mnt/vendor") && !StartsWith(test, "/mnt/product")) ||
+             !StartsWith(test, "/mnt/vendor") && !StartsWith(test, "/mnt/product") &&
+             !StartsWith(test, "/mnt/installer")) ||
             StartsWith(test, "/storage/")) {
             toUnmount.push_front(test);
         }