diff --git a/src/ChangeLog b/src/ChangeLog
index 696386952f7..12562c88c93 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,8 @@
+2007-09-16  Andreas Schwab  <schwab@suse.de>
+
+	* alloc.c (reset_malloc_hooks): Set the hooks to the previous
+	values instead of zapping them.
+
 2007-09-14  Glenn Morris  <rgm@gnu.org>
 
 	* fringe.c (init_fringe_bitmap) <swap_nibble>: Move to file scope.
diff --git a/src/alloc.c b/src/alloc.c
index 8aea81a0f72..f1758158344 100644
--- a/src/alloc.c
+++ b/src/alloc.c
@@ -1343,9 +1343,9 @@ emacs_blocked_realloc (ptr, size, ptr2)
 void
 reset_malloc_hooks ()
 {
-  __free_hook = 0;
-  __malloc_hook = 0;
-  __realloc_hook = 0;
+  __free_hook = old_free_hook;
+  __malloc_hook = old_malloc_hook;
+  __realloc_hook = old_realloc_hook;
 }
 #endif /* HAVE_GTK_AND_PTHREAD */