diff --git a/cryptfs.c b/cryptfs.c
index 020fc7e..cc1a52a 100644
--- a/cryptfs.c
+++ b/cryptfs.c
@@ -53,6 +53,7 @@
 #include "ext4_utils.h"
 #include "f2fs_sparseblock.h"
 #include "CheckBattery.h"
+#include "Process.h"
 
 #include <hardware/keymaster.h>
 
@@ -1450,6 +1451,7 @@
       SLOGD("unmounting %s succeeded\n", mountpoint);
       rc = 0;
     } else {
+      vold_killProcessesWithOpenFiles(mountpoint, 0);
       SLOGE("unmounting %s failed\n", mountpoint);
       rc = -1;
     }