diff --git a/module3/exo3/exercice_en.ipynb b/module3/exo3/exercice_en.ipynb
index 4ed08fb3214812e57e093275ef16ceeee759ab8d..472d0dbbfcfde15e567a07c2c71f831a5a580584 100644
--- a/module3/exo3/exercice_en.ipynb
+++ b/module3/exo3/exercice_en.ipynb
@@ -818,7 +818,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "This form of determination does not give results because the CO2 concentration data from the oscillation are not zero but have low values, both positive and negative, so the correct method must detect these zero crossings\".\n",
+    "This form of determination does not give results because the CO2 concentration data from the oscillation are not zero but have low values, both positive and negative, so the option adopted is the searching of these zero crossings\".\n",
     "\n",
     "Searching for zero crossings\n"
    ]