diff --git a/libavdevice/x11grab.c b/libavdevice/x11grab.c
index 45bea807a3..41dbef6975 100644
--- a/libavdevice/x11grab.c
+++ b/libavdevice/x11grab.c
@@ -224,8 +224,8 @@ x11grab_read_header(AVFormatContext *s1)
     }
 
     if (x11grab->use_shm) {
-    use_shm = XShmQueryExtension(dpy);
-    av_log(s1, AV_LOG_INFO, "shared memory extension%s found\n", use_shm ? "" : " not");
+        use_shm = XShmQueryExtension(dpy);
+        av_log(s1, AV_LOG_INFO, "shared memory extension%s found\n", use_shm ? "" : " not");
     }
 
     if(use_shm) {