1 files changed, 2 insertions, 0 deletions
diff --git a/io.c b/io.c
index 5c7fc39c98..addebc3607 100644
--- a/io.c
+++ b/io.c
@@ -74,6 +74,8 @@
 
 #ifdef HAVE_SYSCALL_H
 #include <syscall.h>
+#elif defined HAVE_SYS_SYSCALL_H
+#include <sys/syscall.h>
 #endif
 
 extern void Init_File(void);