diff --git a/README.md b/README.md
index 93bd7bb..9bb12df 100644
--- a/README.md
+++ b/README.md
@@ -5,13 +5,7 @@ erDiagram
A ||--o{ B : "
"
```
-```mermaid
-sequenceDiagram
- participant A as Alice
$$ ext{A}$$
- A->>B: hi
-```
-
```mermaid
erDiagram
- C ||--o{ D : "
"
+ C ||--o{ D : "
"
```