diff --git a/openeo/NDVI_Timeseries.ipynb b/openeo/NDVI_Timeseries.ipynb
index 5762232..d58a668 100644
--- a/openeo/NDVI_Timeseries.ipynb
+++ b/openeo/NDVI_Timeseries.ipynb
@@ -106,7 +106,7 @@
    "source": [
     "We want to calculate the NDVI values in a couple of fields in a time window of a couple of months.\n",
     "\n",
-    "For simplicty, we load the field geometries as an inline GeoJSON feature collection:"
+    "For simplicity, we load the field geometries as an inline GeoJSON feature collection:"
    ]
   },
   {
@@ -418,7 +418,7 @@
     "\n",
     "There are quite some outliers because we didn't filter out cloudy observations or pixels.\n",
     "We can use the \"SCL\" (scene classification) band from the \"SENTINEL2_L2A\" collection to focus on non-cloud pixels.\n",
-    "Let's load an \"SENTINEL2_L2A\" data cube again, with the additional \"SCL\" band, and calculate the NDVI like before:"
+    "Let's load a \"SENTINEL2_L2A\" data cube again, with the additional \"SCL\" band, and calculate the NDVI like before:"
    ]
   },
   {
@@ -573,7 +573,7 @@
    "source": [
     "## Timeseries Smoothing\n",
     "\n",
-    "As final step in this demonstration we will add a openEO user-defined function (UDF) to the processing. \n",
+    "As final step in this demonstration we will add an openEO user-defined function (UDF) to the processing. \n",
     "A UDF allows to submit a snippet of, for example, Python code to be executed on the data at the backend side.\n",
     "In this case we'll define a UDF to:\n",
     "\n",