diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 4fe34f5f31..ff4272cab7 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,8 @@
+2010-04-21  Stan Shebs  <stan@codesourcery.com>
+	    Nathan Sidwell  <nathan@codesourcery.com>
+
+	* tracepoint.c (trace_save): Open in binary mode.
+
 2010-04-22  Pierre Muller  <muller@ics.u-strasbg.fr>
 
 	* gdbtypes.h (builtin_type): Add builtin_char16 and builtin_char32
diff --git a/gdb/tracepoint.c b/gdb/tracepoint.c
index e50a1e0f99..90691d02a2 100644
--- a/gdb/tracepoint.c
+++ b/gdb/tracepoint.c
@@ -2616,7 +2616,7 @@ trace_save (const char *filename, int target_does_save)
   pathname = tilde_expand (filename);
   cleanup = make_cleanup (xfree, pathname);
 
-  fp = fopen (pathname, "w");
+  fp = fopen (pathname, "wb");
   if (!fp)
     error (_("Unable to open file '%s' for saving trace data (%s)"),
 	   filename, safe_strerror (errno));