diff --git a/src/tiff/libtiff/mkg3states.c b/src/tiff/libtiff/mkg3states.c
index dc9658d4d5..c6efa79792 100644
--- a/src/tiff/libtiff/mkg3states.c
+++ b/src/tiff/libtiff/mkg3states.c
@@ -29,7 +29,7 @@
  * in Frank Cringle's viewfax program;
  *      Copyright (C) 1990, 1995  Frank D. Cringle.
  */
-#include "tif_config.h"
+#include <tif_config.h>
 
 #include <stdio.h>
 #include <stdlib.h>
diff --git a/src/tiff/libtiff/tif_unix.c b/src/tiff/libtiff/tif_unix.c
index f63bae6279..24ded1c670 100644
--- a/src/tiff/libtiff/tif_unix.c
+++ b/src/tiff/libtiff/tif_unix.c
@@ -28,7 +28,7 @@
  * TIFF Library UNIX-specific Routines. These are should also work with the
  * Windows Common RunTime Library.
  */
-#include "tif_config.h"
+#include <tif_config.h>
 
 #ifdef HAVE_SYS_TYPES_H
 # include <sys/types.h>
diff --git a/src/tiff/libtiff/tiffiop.h b/src/tiff/libtiff/tiffiop.h
index 186d5c6bb1..fd3e0d4e03 100644
--- a/src/tiff/libtiff/tiffiop.h
+++ b/src/tiff/libtiff/tiffiop.h
@@ -30,7 +30,7 @@
  * ``Library-private'' definitions.
  */
 
-#include "tif_config.h"
+#include <tif_config.h>
 
 #ifdef HAVE_FCNTL_H
 # include <fcntl.h>