diff --git a/crates/plugin_runtime/README.md b/crates/plugin_runtime/README.md
index cdf4f6b94e38033fe938823b26cb844c72117178..83248ba66d430b310b69f896ab56c0bd53f64300 100644
--- a/crates/plugin_runtime/README.md
+++ b/crates/plugin_runtime/README.md
@@ -281,7 +281,7 @@ use plugin::prelude::*;
 
 #[export]
 pub fn format(message: String) -> String {
-    format!("Cool Plugin says... "{}!", message)
+    format!("Cool Plugin says... '{}!'", message)
 }
 
 #[export]