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-rw-r--r--io.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/io.c b/io.c
index 1dba2ea..ae5634e 100644
--- a/io.c
+++ b/io.c
@@ -2627,7 +2627,7 @@ rb_io_ctl(io, req, arg, io_p)
int io_p;
{
#if !defined(MSDOS) && !defined(__human68k__)
- int cmd = NUM2INT(req);
+ int cmd = NUM2ULONG(req);
OpenFile *fptr;
int len = 0;
int fd;