diff --git a/build.zig b/build.zig
index 6858c80..467240c 100644
--- a/build.zig
+++ b/build.zig
@@ -24,14 +24,14 @@ fn setupLinks(step: *builds.LibExeObjStep) void {
 
     for (possible_lilv_include_dirs) |possible_lilv_dir| {
         var possible_dir = std.fs.cwd().openDir(possible_lilv_dir, .{}) catch |err| {
-            std.debug.warn("possible lilv {} fail: {}\n", .{ possible_lilv_dir, err });
+            std.debug.warn("possible lilv {s} fail: {s}\n", .{ possible_lilv_dir, err });
             continue;
         };
 
         possible_dir.close();
         found_any_lilv = true;
 
-        std.debug.warn("found lilv at '{}'\n", .{possible_lilv_dir});
+        std.debug.warn("found lilv at '{s}'\n", .{possible_lilv_dir});
         step.addIncludeDir(possible_lilv_dir);
     }