diff --git a/ipc/shm.c b/ipc/shm.c
index 4f133d2..fe7ae73 100644
--- a/ipc/shm.c
+++ b/ipc/shm.c
@@ -698,7 +698,6 @@
 	int    err;
 	unsigned long flags;
 	unsigned long prot;
-	unsigned long o_flags;
 	int acc_mode;
 	void *user_addr;
 
@@ -725,11 +724,9 @@
 
 	if (shmflg & SHM_RDONLY) {
 		prot = PROT_READ;
-		o_flags = O_RDONLY;
 		acc_mode = S_IRUGO;
 	} else {
 		prot = PROT_READ | PROT_WRITE;
-		o_flags = O_RDWR;
 		acc_mode = S_IRUGO | S_IWUGO;
 	}
 	if (shmflg & SHM_EXEC) {