diff -ru allegro.orig/include/allegro/platform/alucfg.h allegro/include/allegro/platform/alucfg.h
--- allegro.orig/include/allegro/platform/alucfg.h	2018-11-19 12:40:06.000000000 +0300
+++ allegro/include/allegro/platform/alucfg.h	2018-11-26 12:39:34.453001956 +0300
@@ -24,8 +24,8 @@
 #define ALLEGRO_CONSOLE_OK
 #define ALLEGRO_VRAM_SINGLE_SURFACE
 
-#define ALLEGRO_EXTRA_HEADER "allegro/platform/alunix.h"
-#define ALLEGRO_INTERNAL_HEADER "allegro/platform/aintunix.h"
+#define ALLEGRO_EXTRA_HEADER <allegro/platform/alunix.h>
+#define ALLEGRO_INTERNAL_HEADER <allegro/platform/aintunix.h>
 
 /* These defines will be provided by configure script.  */
 #undef ALLEGRO_COLOR8
@@ -34,7 +34,7 @@
 #undef ALLEGRO_COLOR32
 
 /* Include configuration generated by configure script.  */
-#include "allegro/platform/alunixac.h"
+#include <allegro/platform/alunixac.h>
 
 /* Enable multithreaded library */
 #ifdef ALLEGRO_HAVE_LIBPTHREAD
diff -ru allegro.orig/include/allegro.h allegro/include/allegro.h
--- allegro.orig/include/allegro.h	2018-11-19 12:40:06.000000000 +0300
+++ allegro/include/allegro.h	2018-11-26 12:36:34.299457470 +0300
@@ -22,53 +22,53 @@
 #ifndef ALLEGRO_H
 #define ALLEGRO_H
 
-#include "allegro/base.h"
+#include <allegro/base.h>
 
-#include "allegro/system.h"
-#include "allegro/debug.h"
+#include <allegro/system.h>
+#include <allegro/debug.h>
 
-#include "allegro/unicode.h"
+#include <allegro/unicode.h>
 
-#include "allegro/mouse.h"
-#include "allegro/timer.h"
-#include "allegro/keyboard.h"
-#include "allegro/joystick.h"
-
-#include "allegro/palette.h"
-#include "allegro/gfx.h"
-#include "allegro/color.h"
-#include "allegro/draw.h"
-#include "allegro/rle.h"
-#include "allegro/compiled.h"
-#include "allegro/text.h"
-#include "allegro/font.h"
-
-#include "allegro/fli.h"
-#include "allegro/config.h"
-#include "allegro/gui.h"
-
-#include "allegro/sound.h"
-
-#include "allegro/file.h"
-#include "allegro/lzss.h"
-#include "allegro/datafile.h"
-
-#include "allegro/fixed.h"
-#include "allegro/fmaths.h"
-#include "allegro/matrix.h"
-#include "allegro/quat.h"
+#include <allegro/mouse.h>
+#include <allegro/timer.h>
+#include <allegro/keyboard.h>
+#include <allegro/joystick.h>
+
+#include <allegro/palette.h>
+#include <allegro/gfx.h>
+#include <allegro/color.h>
+#include <allegro/draw.h>
+#include <allegro/rle.h>
+#include <allegro/compiled.h>
+#include <allegro/text.h>
+#include <allegro/font.h>
+
+#include <allegro/fli.h>
+#include <allegro/config.h>
+#include <allegro/gui.h>
+
+#include <allegro/sound.h>
+
+#include <allegro/file.h>
+#include <allegro/lzss.h>
+#include <allegro/datafile.h>
+
+#include <allegro/fixed.h>
+#include <allegro/fmaths.h>
+#include <allegro/matrix.h>
+#include <allegro/quat.h>
 
-#include "allegro/3d.h"
-#include "allegro/3dmaths.h"
+#include <allegro/3d.h>
+#include <allegro/3dmaths.h>
 
 
 #ifndef ALLEGRO_NO_COMPATIBILITY
-   #include "allegro/alcompat.h"
+   #include <allegro/alcompat.h>
 #endif
 
 #ifndef ALLEGRO_NO_FIX_CLASS
    #ifdef __cplusplus
-      #include "allegro/fix.h"
+      #include <allegro/fix.h>
    #endif
 #endif