diff --git a/src/ex_getln.c b/src/ex_getln.c
index ecaeb3f..5cda65a 100644
--- a/src/ex_getln.c
+++ b/src/ex_getln.c
@@ -2000,8 +2000,8 @@
 
 #if defined(FEAT_AUTOCMD) || defined(PROTO)
 /*
- * Check if "curbuf_lock" is set and return TRUE when it is and give an error
- * message.
+ * Check if "curbuf_lock" or "allbuf_lock" is set and return TRUE when it is
+ * and give an error message.
  */
     int
 curbuf_locked()
@@ -2011,6 +2011,21 @@
 	EMSG(_("E788: Not allowed to edit another buffer now"));
 	return TRUE;
     }
+    return allbuf_locked();
+}
+
+/*
+ * Check if "allbuf_lock" is set and return TRUE when it is and give an error
+ * message.
+ */
+    int
+allbuf_locked()
+{
+    if (allbuf_lock > 0)
+    {
+	EMSG(_("E811: Not allowed to change buffer information now"));
+	return TRUE;
+    }
     return FALSE;
 }
 #endif