Index: src/OFSystemInfo.m
==================================================================
--- src/OFSystemInfo.m
+++ src/OFSystemInfo.m
@@ -24,11 +24,11 @@
 #include "platform.h"
 
 #ifdef HAVE_SYS_UTSNAME_H
 # include <sys/utsname.h>
 #endif
-#if defined(OF_MACOS) || defined(OF_NETBSD)
+#if defined(OF_MACOS) || defined(OF_IOS) || defined(OF_NETBSD)
 # include <sys/sysctl.h>
 #endif
 
 #ifdef OF_AMIGAOS
 # include <exec/execbase.h>