diff --git a/Makefile-tests.am b/Makefile-tests.am
index 29fc41c0..3284de57 100644
--- a/Makefile-tests.am
+++ b/Makefile-tests.am
@@ -114,12 +114,6 @@ insttest_SCRIPTS += tests/test-core.js \
 testmeta_DATA += test-core.test test-sizes.test test-sysroot.test
 endif
 
-insttest_LTLIBRARIES = libreaddir-rand.la
-libreaddir_rand_la_SOURCES = tests/readdir-rand.c
-libreaddir_rand_la_CFLAGS = $(OT_INTERNAL_GIO_UNIX_CFLAGS)
-libreaddir_rand_la_LIBADD = $(OT_INTERNAL_GIO_UNIX_LIBS)
-libreaddir_rand_la_LDFLAGS = -avoid-version
-
 endif
 
 # "make check" do not depend from --enable-installed-tests
diff --git a/tests/libtest.sh b/tests/libtest.sh
index b788bc97..ba435c09 100644
--- a/tests/libtest.sh
+++ b/tests/libtest.sh
@@ -39,8 +39,6 @@ fi
 
 if test -n "$OT_TESTS_VALGRIND"; then
     CMD_PREFIX="env G_SLICE=always-malloc valgrind -q --leak-check=full --num-callers=30 --suppressions=${SRCDIR}/ostree-valgrind.supp"
-else
-    CMD_PREFIX="env LD_PRELOAD=${SRCDIR}/libreaddir-rand.so"
 fi
 
 assert_not_reached () {
diff --git a/tests/readdir-rand.c b/tests/readdir-rand.c
deleted file mode 100644
index 70a001fe..00000000
--- a/tests/readdir-rand.c
+++ /dev/null
@@ -1,124 +0,0 @@
-#define _GNU_SOURCE
-#include <dirent.h>
-#include <stdio.h>
-#include <unistd.h>
-#include <dlfcn.h>
-#include <errno.h>
-#include <stdlib.h>
-#include <fcntl.h>
-#include <sys/stat.h>
-#include <glib.h>
-
-struct linux_dirent {
-  long           d_ino;
-  off_t          d_off;
-  unsigned short d_reclen;
-  char           d_name[];
-};
-
-#define BUF_SIZE 1024
-
-static GHashTable *direntcache;
-static GMutex direntcache_lock;
-static gsize initialized;
-
-typedef struct {
-  GPtrArray *entries;
-  guint offset;
-} DirEntries;
-
-static void
-dir_entries_free (gpointer data)
-{
-  DirEntries *d = data;
-  g_ptr_array_unref (d->entries);
-  g_free (d);
-}
-
-static DirEntries *
-dir_entries_new (void)
-{
-  DirEntries *d = g_new0 (DirEntries, 1);
-  d->entries = g_ptr_array_new_with_free_func (g_free);
-  return d;
-}
-
-static void
-ensure_initialized (void)
-{
-  if (g_once_init_enter (&initialized))
-    {
-      direntcache = g_hash_table_new_full (NULL, NULL, NULL, dir_entries_free);
-      g_mutex_init (&direntcache_lock);
-      g_once_init_leave (&initialized, 1);
-    }
-}
-
-struct dirent *
-readdir (DIR *dirp)
-{
-  struct dirent *(*real_readdir)(DIR *dirp) = dlsym (RTLD_NEXT, "readdir");
-  struct dirent *ret;
-  gboolean doloop = TRUE;
-  
-  ensure_initialized ();
-
-  while (doloop)
-    {
-      DirEntries *de;
-      GSList *l;
-
-      errno = 0;
-      ret = real_readdir (dirp);
-      if (ret == NULL && errno != 0)
-	goto out;
-
-      g_mutex_lock (&direntcache_lock);
-      de = g_hash_table_lookup (direntcache, dirp);
-      if (ret)
-	{
-	  if (g_random_boolean ())
-	    {
-	      if (!de)
-		{
-		  de = dir_entries_new ();
-		  g_hash_table_insert (direntcache, dirp, de);
-		}
-	      struct dirent *copy;
-	      copy = g_memdup (ret, sizeof (struct dirent));
-	      g_ptr_array_add (de->entries, copy);
-	    }
-	  else
-	    {
-	      doloop = FALSE;
-	    }
-	}
-      else
-	{
-	  if (de && de->offset < de->entries->len)
-	    {
-	      ret = de->entries->pdata[de->offset];
-	      de->offset++;
-	    }
-	  doloop = FALSE;
-	}
-      g_mutex_unlock (&direntcache_lock);
-    }
-  
- out:
-  return ret;
-}
-
-int
-closedir (DIR *dirp)
-{
-  int (*real_closedir)(DIR *dirp) = dlsym (RTLD_NEXT, "closedir");
-
-  ensure_initialized ();
-  
-  g_mutex_lock (&direntcache_lock);
-  g_hash_table_remove (direntcache, dirp);
-  g_mutex_unlock (&direntcache_lock);
-
-  return real_closedir (dirp);
-}