diff --git a/schemars/src/lib.rs b/schemars/src/lib.rs
index 377f31f..b529a8f 100644
--- a/schemars/src/lib.rs
+++ b/schemars/src/lib.rs
@@ -111,9 +111,9 @@ use schemars::{schema_for, JsonSchema};
 use serde::{Deserialize, Serialize};
 
 #[derive(Deserialize, Serialize, JsonSchema)]
-#[serde(rename_all = "camelCase")]
+#[serde(rename_all = "camelCase", deny_unknown_fields)]
 pub struct MyStruct {
-    #[serde(rename = "myNumber", deny_unknown_fields)]
+    #[serde(rename = "myNumber")]
     pub my_int: i32,
     pub my_bool: bool,
     #[serde(default)]