diff --git a/main.go b/main.go
index 59472e826..ac449541a 100644
--- a/main.go
+++ b/main.go
@@ -264,6 +264,13 @@ func main() {
 	if err != nil {
 		l.ErrorContext(ctx, "running dnsproxy", slogutil.KeyError, err)
 
+		// As defers are skipped in case of os.Exit, close logOutput manually.
+		//
+		// TODO(a.garipov): Consider making logger.Close method.
+		if logOutput != os.Stdout {
+			_ = logOutput.Close()
+		}
+
 		os.Exit(osutil.ExitCodeFailure)
 	}
 }