diff --git a/std/array.d b/std/array.d
index 67d76e2dcf8..bab81c686e8 100644
--- a/std/array.d
+++ b/std/array.d
@@ -650,7 +650,8 @@ if (isInputRange!Values && isInputRange!Keys)
                 alias ValueElement = ElementType!Values;
                 static if (hasElaborateDestructor!ValueElement)
                     ValueElement.init.__xdtor();
-                cast(void) values.front;
+
+                aa[key] = values.front;
             })))
             {
                 () @trusted {