diff --git a/tools/dnc/main.cpp b/tools/dnc/main.cpp
index 6f8bad7..f89661e 100644
--- a/tools/dnc/main.cpp
+++ b/tools/dnc/main.cpp
@@ -145,7 +145,9 @@
     }
 
     pj_log_set_level(level);
-    pj_log_set_log_func([](int level, const char* data, int /*len*/) {});
+    pj_log_set_log_func([](int level, const char* data, int len) {
+        fmt::print("{}", std::string_view(data, len));
+    });
 }
 
 int