diff --git a/module3/exo1/influenza-like-illness-analysis.Rmd b/module3/exo1/influenza-like-illness-analysis.Rmd
index cd788faea660bb389b1edaac07ec432e44eb15b1..d1ea11af82ad8323636b92278223e806538a9aaf 100644
--- a/module3/exo1/influenza-like-illness-analysis.Rmd
+++ b/module3/exo1/influenza-like-illness-analysis.Rmd
@@ -26,13 +26,13 @@ The data on the incidence of influenza-like illness are available from the Web s
 data_url = "http://www.sentiweb.fr/datasets/incidence-PAY-3.csv"
 ```
 
-In order to protect us in case the Réseau Sentinelles Web server disappears or is modified, we make a local copy of this dataset that we store together with our analysis. It is unnecessary and even risky to download the data at each execution, because in case of a malfunction we might be replacing our file by a corrupted version. Therefore we download the data only if no local copy exists.	
+In order to protect us in case the Réseau Sentinelles Web server disappears or is modified, we make a local copy of this dataset that we store together with our analysis. It is unnecessary and even risky to download the data at each execution, because in case of a malfunction we might be replacing our file by a corrupted version. Therefore we download the data only if no local copy exists.
 
-```{r}	
-data_file = "syndrome-grippal.csv"	
-if (!file.exists(data_file)) {	
-    download.file(data_url, data_file, method="auto")	
-}	
+```{r}
+data_file = "syndrome-grippal.csv"
+if (!file.exists(data_file)) {
+    download.file(data_url, data_file, method="auto")
+}
 ```
 
 This is the documentation of the data from [the download site](https://ns.sentiweb.fr/incidence/csv-schema-v1.json):