diff --git a/mysql/schema.sql b/mysql/schema.sql
index 35e9beee..bb422a2e 100644
--- a/mysql/schema.sql
+++ b/mysql/schema.sql
@@ -55,5 +55,5 @@ CREATE TABLE likes
 
     CONSTRAINT posts_pk PRIMARY KEY (id),
     FOREIGN KEY (user_id) REFERENCES users (id),
-    FOREIGN KEY (post_id) REFERENCES posts (id)
+    FOREIGN KEY (post_id) REFERENCES posts (id) ON DELETE CASCADE
 );