diff --git a/src/posix/cocoa/i_timer.cpp b/src/posix/cocoa/i_timer.cpp
index 901657eb95..5141f8750c 100644
--- a/src/posix/cocoa/i_timer.cpp
+++ b/src/posix/cocoa/i_timer.cpp
@@ -37,8 +37,6 @@
 #include <pthread.h>
 #include <libkern/OSAtomic.h>
 
-#include "basictypes.h"
-#include "basicinlines.h"
 #include "doomdef.h"
 #include "i_system.h"
 #include "templates.h"
diff --git a/src/posix/sdl/i_timer.cpp b/src/posix/sdl/i_timer.cpp
index cad3000ba4..84108f3b77 100644
--- a/src/posix/sdl/i_timer.cpp
+++ b/src/posix/sdl/i_timer.cpp
@@ -7,8 +7,7 @@
 
 #include <SDL.h>
 
-#include "basictypes.h"
-#include "basicinlines.h"
+#include "m_fixed.h"
 #include "hardware.h"
 #include "i_system.h"
 #include "templates.h"