diff --git a/mozilla/toolkit/crashreporter/client/crashreporter_osx.h b/mozilla/toolkit/crashreporter/client/crashreporter_osx.h
index 15599b90d9d..c2b39f324eb 100644
--- a/mozilla/toolkit/crashreporter/client/crashreporter_osx.h
+++ b/mozilla/toolkit/crashreporter/client/crashreporter_osx.h
@@ -132,6 +132,7 @@
 - (BOOL)resignFirstResponder;  
 - (void)setPlaceholder:(NSString*)placeholder;
 - (void)insertTab:(id)sender;
+- (void)insertBacktab:(id)sender;
 - (void)setEnabled:(BOOL)enabled;
 - (void)dealloc;
 
diff --git a/mozilla/toolkit/crashreporter/client/crashreporter_osx.mm b/mozilla/toolkit/crashreporter/client/crashreporter_osx.mm
index 014c2bb8a65..63647c60dd1 100644
--- a/mozilla/toolkit/crashreporter/client/crashreporter_osx.mm
+++ b/mozilla/toolkit/crashreporter/client/crashreporter_osx.mm
@@ -677,6 +677,11 @@ static bool RestartApplication()
   [[self window] selectNextKeyView:sender];
 }
 
+- (void)insertBacktab:(id)sender
+{
+  [[self window] selectPreviousKeyView:sender];
+}
+
 - (void)setEnabled:(BOOL)enabled
 {
   [self setSelectable:enabled];