diff --git a/TODO.md b/TODO.md
index cebd0dc..8c729ea 100644
--- a/TODO.md
+++ b/TODO.md
@@ -8,3 +8,4 @@
 ##BUG
 1. √ ~~hexo g will not work when the config file with no blogs block.~~
 2. √ ~~if blog content has special character, it will crush.~~
+3. √ ~~if no toc div the decrypt will throw a exception.~~
diff --git a/lib/mcommon.js b/lib/mcommon.js
index 82ad7a2..02fff33 100644
--- a/lib/mcommon.js
+++ b/lib/mcommon.js
@@ -14,10 +14,14 @@ function decryptAES() {
             document.getElementById("encrypt-message").style.display = "none";
 
             document.getElementById("security").style.display        = "none";
-            document.getElementById("toc-div").style.display         = "inline";
+
+            if (document.getElementById("toc-div")) {
+                document.getElementById("toc-div").style.display     = "inline";
+            }
         }
     } catch (e) {
         alert("密码错误！！");
+        console.log(e);
     }
 }
 
diff --git a/package.json b/package.json
index cf02f43..6fe4219 100644
--- a/package.json
+++ b/package.json
@@ -33,5 +33,5 @@
   "scripts": {
     "test": "echo \"Error: no test specified\" && exit 1"
   },
-  "version": "1.1.8"
+  "version": "1.1.9"
 }