1 files changed, 0 insertions, 2 deletions
diff --git a/io.c b/io.c
index 81da283384..0410e6339f 100644
--- a/io.c
+++ b/io.c
@@ -7956,8 +7956,6 @@ ioctl_narg_len(ioctl_req_t cmd)
 #endif
 #ifdef IOCPARM_LEN
     len = IOCPARM_LEN(cmd);	/* on BSDish systems we're safe */
-#elif defined(_IOC_SIZE)
-    len = _IOC_SIZE(cmd);
 #else
     len = 256;		/* otherwise guess at what's safe */
 #endif