diff --git a/ProcessFASTQ.ipynb b/ProcessFASTQ.ipynb
index 0e1cd812e5aa1493e4ea89b47cbb32db3c94595f..30eaeb3533bf642832c9e81a0049736221833c91 100644
--- a/ProcessFASTQ.ipynb
+++ b/ProcessFASTQ.ipynb
@@ -176,7 +176,7 @@
    "source": [
     "## Build working tree\n",
     "\n",
-    "Necessary step if you run this notebook on a local laptop or for the firste time. If so, please convert cell in code."
+    "Necessary step if you run this notebook on a local laptop or for the first time. If so, please convert cell in code."
    ]
   },
   {