diff --git a/build.zig b/build.zig
index 4e9cf6b9..4ae1795f 100644
--- a/build.zig
+++ b/build.zig
@@ -113,6 +113,7 @@ fn linkNetSurf(step: *std.build.LibExeObjStep) void {
     };
     inline for (libs) |lib| {
         step.addObjectFile(.{ .path = ns ++ "/lib/" ++ lib ++ ".a" });
+        step.addIncludePath(.{ .path = ns ++ lib ++ "/src" });
     }
     step.addIncludePath(.{ .path = ns ++ "/include" });