diff --git a/lib/std/priority_queue.zig b/lib/std/priority_queue.zig
index f5c01edff50a7512864b2713bca4fb7ededcc75e..24ad0ec2b14f0c71ff28597c9d6dd2554d188853 100644
--- a/lib/std/priority_queue.zig
+++ b/lib/std/priority_queue.zig
@@ -6,6 +6,7 @@
 const std = @import("std.zig");
 const Allocator = std.mem.Allocator;
 const assert = std.debug.assert;
+const warn = std.debug.warn;
 const testing = std.testing;
 const expect = testing.expect;
 const expectEqual = testing.expectEqual;