diff --git a/Xext/shm.c b/Xext/shm.c
index 589ed0b4d..ed43b9202 100644
--- a/Xext/shm.c
+++ b/Xext/shm.c
@@ -1195,34 +1195,34 @@ static int
 shm_tmpfile(void)
 {
 #ifdef SHMDIR
-	int	fd;
-	char	template[] = SHMDIR "/shmfd-XXXXXX";
+    int	fd;
+    char	template[] = SHMDIR "/shmfd-XXXXXX";
 #ifdef O_TMPFILE
-	fd = open(SHMDIR, O_TMPFILE|O_RDWR|O_CLOEXEC|O_EXCL, 0666);
-	if (fd >= 0) {
-		DebugF ("Using O_TMPFILE\n");
-		return fd;
-	}
-	ErrorF ("Not using O_TMPFILE\n");
+    fd = open(SHMDIR, O_TMPFILE|O_RDWR|O_CLOEXEC|O_EXCL, 0666);
+    if (fd >= 0) {
+        DebugF ("Using O_TMPFILE\n");
+        return fd;
+    }
+    ErrorF ("Not using O_TMPFILE\n");
 #endif
 #ifdef HAVE_MKOSTEMP
-	fd = mkostemp(template, O_CLOEXEC);
+    fd = mkostemp(template, O_CLOEXEC);
 #else
-	fd = mkstemp(template);
+    fd = mkstemp(template);
 #endif
-	if (fd < 0)
-		return -1;
-	unlink(template);
-#ifndef HAVE_MKOSTEMP
-	int flags = fcntl(fd, F_GETFD);
-	if (flags != -1) {
-		flags |= FD_CLOEXEC;
-		(void) fcntl(fd, F_SETFD, &flags);
-	}
-#endif
-	return fd;
-#else
+    if (fd < 0)
         return -1;
+    unlink(template);
+#ifndef HAVE_MKOSTEMP
+    int flags = fcntl(fd, F_GETFD);
+    if (flags != -1) {
+        flags |= FD_CLOEXEC;
+        (void) fcntl(fd, F_SETFD, &flags);
+    }
+#endif
+    return fd;
+#else
+    return -1;
 #endif
 }