diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 981ccf4d8f5..b60b3e6ceac 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,7 @@
+2016-10-06  Simon Marchi  <simon.marchi@ericsson.com>
+
+	* frame.h: Forward-declare struct ui_out.
+
 2016-10-06  Tom Tromey  <tom@tromey.com>
 
 	* MAINTAINERS: Remove Java test maintainer.
diff --git a/gdb/frame.h b/gdb/frame.h
index de13e7dc392..a05ac82f909 100644
--- a/gdb/frame.h
+++ b/gdb/frame.h
@@ -77,6 +77,7 @@ struct frame_base;
 struct block;
 struct gdbarch;
 struct ui_file;
+struct ui_out;
 
 /* Status of a given frame's stack.  */