diff --git a/README.md b/README.md
index 421c4e7..721902f 100644
--- a/README.md
+++ b/README.md
@@ -40,7 +40,7 @@ func main() {
 }
 
 func writer() {
-	shmid, data, err := shm.GetAt(2, 128, shm.IPC_CREATE|0600)
+	shmid, data, err := shm.GetAt(2, 128, shm.IPC_CREAT|0600)
 	if err != nil {
 		log.Fatal(err)
 	}
@@ -92,9 +92,9 @@ func writer() {
 	if err != nil {
 		panic(err)
 	}
+	defer shm.Close(fd)
 	length := 128
 	shm.Ftruncate(fd, int64(length))
-	defer shm.Close(fd)
 	defer shm.Unlink(name)
 	data, err := mmap.Open(fd, 0, length, mmap.READ|mmap.WRITE)
 	if err != nil {
@@ -110,6 +110,7 @@ func reader() {
 	if err != nil {
 		panic(err)
 	}
+	defer shm.Close(fd)
 	data, err := mmap.Open(fd, 0, 128, mmap.READ)
 	if err != nil {
 		panic(err)
diff --git a/shm_unix.go b/shm_unix.go
index be9aeaa..7685de2 100644
--- a/shm_unix.go
+++ b/shm_unix.go
@@ -11,8 +11,8 @@ import (
 )
 
 const (
-	// IPC_CREATE creates if key is nonexistent
-	IPC_CREATE = 00001000
+	// IPC_CREAT creates if key is nonexistent
+	IPC_CREAT = 00001000
 
 	//IPC_RMID removes identifier
 	IPC_RMID = 0
@@ -21,7 +21,7 @@ const (
 // GetAt calls the shmget and shmat system call.
 func GetAt(key int, size int, shmFlg int) (uintptr, []byte, error) {
 	if shmFlg == 0 {
-		shmFlg = IPC_CREATE | 0600
+		shmFlg = IPC_CREAT | 0600
 	}
 	shmid, _, errno := syscall.Syscall(SYS_SHMGET, uintptr(key), uintptr(validSize(int64(size))), uintptr(shmFlg))
 	if int(shmid) < 0 {
diff --git a/shm_unix_test.go b/shm_unix_test.go
index acd11e7..881518b 100644
--- a/shm_unix_test.go
+++ b/shm_unix_test.go
@@ -16,7 +16,7 @@ func TestGetAt(t *testing.T) {
 	context := "Hello World"
 	done := make(chan struct{})
 	go func() {
-		shmid, data, err := GetAt(2, 128, IPC_CREATE|0600)
+		shmid, data, err := GetAt(2, 128, IPC_CREAT|0600)
 		if err != nil {
 			t.Error(err)
 		}