diff --git a/src/variable_bindings.md b/src/variable_bindings.md
index b280ed5486..4e23c11c89 100644
--- a/src/variable_bindings.md
+++ b/src/variable_bindings.md
@@ -26,5 +26,6 @@ fn main() {
 
     let noisy_unused_variable = 2u32;
     // FIXME ^ Prefix with an underscore to suppress the warning
+    // Please note that warnings may not be shown in a browser
 }
-```
\ No newline at end of file
+```