diff --git a/src/platform_iphone.m b/src/platform_iphone.m
index b7f5b9388..d6da83fcd 100644
--- a/src/platform_iphone.m
+++ b/src/platform_iphone.m
@@ -41,6 +41,7 @@
 #include "../SpringBoardAccess/SpringBoardAccess.h"
 
 #include <stdio.h>
+#include <unistd.h>
 
 #ifdef USE_SPRINGBOARD
 #include <CoreFoundation/CoreFoundation.h>