diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index f2526ca93c1..e126f80b80e 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,8 @@
+2018-09-04  Tom Tromey  <tom@tromey.com>
+
+	* gnulib/Makefile.in: Remove obsolete comment.
+	* Makefile.in: Remove obsolete comment.
+
 2018-09-04  Andrew Burgess  <andrew.burgess@embecosm.com>
 
 	* riscv-tdep.c (riscv_frame_cache): Fix ARI warning, don't end a
diff --git a/gdb/Makefile.in b/gdb/Makefile.in
index 438379e2ab1..e75ef66a070 100644
--- a/gdb/Makefile.in
+++ b/gdb/Makefile.in
@@ -98,11 +98,6 @@ MSGMERGE = msgmerge
 PACKAGE = @PACKAGE@
 CATALOGS = @CATALOGS@
 
-# If you are compiling with GCC, make sure that either 1) You have the
-# fixed include files where GCC can reach them, or 2) You use the
-# -traditional flag.  Otherwise the ioctl calls in inflow.c
-# will be incorrectly compiled.  The "fixincludes" script in the gcc
-# distribution will fix your include files up.
 CC = @CC@
 CXX = @CXX@
 CXX_DIALECT = @CXX_DIALECT@
diff --git a/gdb/gnulib/Makefile.in b/gdb/gnulib/Makefile.in
index 1602da54b6c..117831a3d4e 100644
--- a/gdb/gnulib/Makefile.in
+++ b/gdb/gnulib/Makefile.in
@@ -62,11 +62,6 @@ SUBDIRS = import
 CLEANDIRS = $(SUBDIRS)
 REQUIRED_SUBDIRS = $(SUBDIRS)
 
-# If you are compiling with GCC, make sure that either 1) You have the
-# fixed include files where GCC can reach them, or 2) You use the
-# -traditional flag.  Otherwise the ioctl calls in inflow.c
-# will be incorrectly compiled.  The "fixincludes" script in the gcc
-# distribution will fix your include files up.
 CC=@CC@
 
 # Directory containing source files.