diff --git a/rapport_activite/rapport_activite.sh b/rapport_activite/rapport_activite.sh
index 3eb848b..ad50462 100755
--- a/rapport_activite/rapport_activite.sh
+++ b/rapport_activite/rapport_activite.sh
@@ -62,10 +62,10 @@ generateHTTPReport()
     local errorRequestCount=$(zgrep "$monthEnglish" $LOG_PREFIX-error.log*|grep -c "$year")
     echo "Nombre de requêtes http en erreur             = $errorRequestCount"
 
-    local ipv4VisitorCount=$(zgrep -h "$monthEnglish" $LOG_PREFIX-access.log*|grep "$year"|grep -vi bot|grep -v check_http|egrep "^$IPV4_PATTERN "|cut -d' ' -f1|sort|uniq|wc -l )
+    local ipv4VisitorCount=$(zgrep -h "$monthEnglish" $LOG_PREFIX-access.log*|grep "$year"|grep -vi bot|grep -v check_http|grep -E "^$IPV4_PATTERN "|cut -d' ' -f1|sort|uniq|wc -l )
     echo "Nombre d'ipv4 ayant visité le service         = $ipv4VisitorCount"
 
-    local ipv6VisitorCount=$(zgrep -h "$monthEnglish" $LOG_PREFIX-access.log*|grep "$year"|grep -vi bot|grep -v check_http|egrep "^$IPV6_PATTERN "|cut -d' ' -f1|sort|uniq|wc -l )
+    local ipv6VisitorCount=$(zgrep -h "$monthEnglish" $LOG_PREFIX-access.log*|grep "$year"|grep -vi bot|grep -v check_http|grep -E "^$IPV6_PATTERN "|cut -d' ' -f1|sort|uniq|wc -l )
     echo "Nombre d'ipv6 ayant visité le service         = $ipv6VisitorCount"
 
     echo "Nombre total d'ip ayant visité le service     = $((ipv4VisitorCount+ipv6VisitorCount))"
@@ -83,10 +83,10 @@ generateSpecificReport()
     echo "=§= Rapport d'activité spécifique"
     echo
 
-    ipv4UserCount=$(zgrep -h "$monthEnglish" $LOG_PREFIX-access.log*|grep "$year"|grep -vi bot|grep -v check_http|egrep "^$IPV4_PATTERN " | cut -d' ' -f 1|sort|uniq|wc -l )
+    ipv4UserCount=$(zgrep -h "$monthEnglish" $LOG_PREFIX-access.log*|grep "$year"|grep -vi bot|grep -v check_http|grep -E "^$IPV4_PATTERN " | cut -d' ' -f 1|sort|uniq|wc -l )
     echo "Nombre d'ipv4 utilisatrices du service        = $ipv4UserCount"
 
-    ipv6UserCount=$(zgrep -h "$monthEnglish" $LOG_PREFIX-access.log*|grep "$year"|grep -vi bot|gre\p -v check_http|egrep "^$IPV6_PATTERN " | cut -d' ' -f 1|sort|uniq|wc -l )
+    ipv6UserCount=$(zgrep -h "$monthEnglish" $LOG_PREFIX-access.log*|grep "$year"|grep -vi bot|grep -v check_http|grep -E "^$IPV6_PATTERN " | cut -d' ' -f 1|sort|uniq|wc -l )
     echo "Nombre d'ipv6 utilisatrices du service        = $ipv6UserCount"
 
     echo "Nombre total d'ip utilisatrices du service    = $((ipv4UserCount+ipv6UserCount))"