diff --git a/configure.ac b/configure.ac
index 979d8ccb..48d8949c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -299,6 +299,10 @@ AS_IF([ test x$with_libmount != xno ], [
         AC_DEFINE([HAVE_LIBMOUNT], 1, [Define if we have libmount.pc])
 	PKG_CHECK_MODULES(OT_DEP_LIBMOUNT, $LIBMOUNT_DEPENDENCY)
 	with_libmount=yes
+  save_LIBS=$LIBS
+  LIBS=$OT_DEP_LIBMOUNT_LIBS
+  AC_CHECK_FUNCS(mnt_unref_cache)
+  LIBS=$save_LIBS
     ], [
 	with_libmount=no
     ])
diff --git a/src/libostree/ostree-sysroot-deploy.c b/src/libostree/ostree-sysroot-deploy.c
index 5a3f6d85..1cfe6ab1 100644
--- a/src/libostree/ostree-sysroot-deploy.c
+++ b/src/libostree/ostree-sysroot-deploy.c
@@ -1692,8 +1692,13 @@ is_ro_mount (const char *path)
 
   fs = mnt_table_find_target(tb, path, MNT_ITER_BACKWARD);
   is_mount = fs && mnt_fs_get_target (fs);
-  mnt_unref_cache (cache);
+#ifdef HAVE_MNT_UNREF_CACHE
   mnt_unref_table (tb);
+  mnt_unref_cache (cache);
+#else
+  mnt_free_table (tb);
+  mnt_free_cache (cache);
+#endif
 
   if (!is_mount)
     return FALSE;