diff --git a/recipes/fit-psd-lightcurve/fit-psd-lightcurve.ipynb b/recipes/fit-psd-lightcurve/fit-psd-lightcurve.ipynb
index 84bbfa5..1ee80a4 100644
--- a/recipes/fit-psd-lightcurve/fit-psd-lightcurve.ipynb
+++ b/recipes/fit-psd-lightcurve/fit-psd-lightcurve.ipynb
@@ -512,7 +512,7 @@
    "source": [
     "%%time\n",
     "index, index_err = minimize_x2_fit(pgram, pl, {\"index\":-2}, dsmax, simulator=\"TK\", nsims=10000, mean=dmean, std=dstd,method=\"Powell\")\n",
-    "print(\"Fit index:\")\n",
+    "print(\f"Fit index: {index}, error: {index_err}\")\n",
     "envelopes, freqs = lightcurve_psd_envelope(\n",
     "    pl,\n",
     "    dnpoints,\n",