diff --git a/book/src/sdk/exec-ext.md b/book/src/sdk/exec-ext.md
index fef15caa..87093563 100644
--- a/book/src/sdk/exec-ext.md
+++ b/book/src/sdk/exec-ext.md
@@ -46,7 +46,7 @@ let cfg = RollupConfig::default();
 let provider = ...;
 let hinter = ...;
 
-let executor = StatelessL2BlcokExecutor::builder(&cfg, provider, hinter)
+let executor = StatelessL2BlockExecutor::builder(&cfg, provider, hinter)
    .with_parent_header(...)
    .with_handle_register(custom_handle_register)
    .build();