diff --git a/13_convolutions.ipynb b/13_convolutions.ipynb
index ba7c30d..53803eb 100644
--- a/13_convolutions.ipynb
+++ b/13_convolutions.ipynb
@@ -2747,7 +2747,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "The data is in two folders named *training* and *testing*, so we have to tell `GrandparentSplitter` about that (it defaults to `train` and `valid`). We de do that in the `get_dls` function, which we create to make it easy to change our batch size later:"
+    "The data is in two folders named *training* and *testing*, so we have to tell `GrandparentSplitter` about that (it defaults to `train` and `valid`). We did do that in the `get_dls` function, which we create to make it easy to change our batch size later:"
    ]
   },
   {