2 files changed, 4 insertions, 1 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index 16d81f8b601..ce977d5e725 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,5 +1,7 @@
 2008-04-01  Stefan Monnier  <monnier@iro.umontreal.ca>
 
+        * xdisp.c (try_window_id): Don't forget to reset delta_bytes.
+
         * casefiddle.c (casify_object): Fix up int/EMACS_INT mixup.
 
         * charset.c (Funibyte_charset, Fset_unibyte_charset): Remove.
diff --git a/src/xdisp.c b/src/xdisp.c
index 073d6a79068..d311cc646b7 100644
--- a/src/xdisp.c
+++ b/src/xdisp.c
@@ -15009,7 +15009,8 @@ try_window_id (w)
     }
   else
     {
-      delta = dvpos = dy = run.current_y = run.desired_y = run.height = 0;
+      delta = delta_bytes = dvpos = dy
+        = run.current_y = run.desired_y = run.height = 0;
       first_unchanged_at_end_row = NULL;
     }
   IF_DEBUG (debug_dvpos = dvpos; debug_dy = dy);