diff --git a/Part.1.E.5.strings.ipynb b/Part.1.E.5.strings.ipynb
index ac06aac29..1d80e2361 100644
--- a/Part.1.E.5.strings.ipynb
+++ b/Part.1.E.5.strings.ipynb
@@ -1618,7 +1618,7 @@
     "print(\"s.lower().startswith('S'):\", \\\n",
     "      s.lower().startswith('S'))\n",
     "print(\"s.lower().startswith('b', 10):\", \\\n",
-    "      s.lower().startswith('b', 10)) \n",
+    "      s.lower().startswith('b', 10))\n",
     "print(\"s.lower().startswith('e', 11, 20):\", \\\n",
     "      s.lower().startswith('e', 11, 20))\n",
     "\n",