diff --git a/src/primitives/array.md b/src/primitives/array.md
index 3811bb6d7f..a3e1e797cc 100644
--- a/src/primitives/array.md
+++ b/src/primitives/array.md
@@ -63,7 +63,7 @@ fn main() {
         }
     }
 
-    // Out of bound indexing causes runtime error.
+    // Out of bound indexing causes compile-time error.
     //println!("{}", xs[5]);
 }
 ```