diff --git a/examples/QPA-Quantitative phase analysis.ipynb b/examples/QPA-Quantitative phase analysis.ipynb
index 1dd4819..0d77888 100644
--- a/examples/QPA-Quantitative phase analysis.ipynb	
+++ b/examples/QPA-Quantitative phase analysis.ipynb	
@@ -113,7 +113,7 @@
    "source": [
     "p = PowderPattern()\n",
     "if not os.path.exists(data_file):\n",
-    "    os.system(\"curl -O https://www.iucr.org/__data/iucr/powder/QARR/col/%s\" % data_file)\n",
+    "    os.system(\"curl -O -q -H \\\"User-Agent: Mozilla/5.0 (Windows NT 11.0; Win64; x64)\\\" https://www.iucr.org/__data/iucr/powder/QARR/col/%s\" % data_file)\n",
     "\n",
     "p.ImportPowderPattern2ThetaObs(data_file)\n",
     "# Copper K-alpha1+alpha2. Use \"Cua1\" for Cu-alpha1 only\n",