cleanup & export db revision uuid

1 files changed, 1 insertions, 1 deletions

diff --git a/src/ffi.rs b/src/ffi.rs
index 3c281fa..5091b43 100644
--- a/src/ffi.rs
+++ b/src/ffi.rs
@@ -399,7 +399,7 @@ extern {
     /// this database.  Two revision numbers are only comparable if they
     /// have the same database UUID.
     pub fn notmuch_database_get_revision(notmuch: *mut notmuch_database_t,
-                                         uuid: *mut *const c_char)
+                                         uuid: *const *mut c_char)
                                          -> c_ulong;
 
     /// Retrieve a directory object from the database for 'path'.