diff --git a/scripts/install b/scripts/install
index 739d17e..a30cd2b 100644
--- a/scripts/install
+++ b/scripts/install
@@ -14,7 +14,7 @@ if [[ ! $? -eq 0 ]]; then
 fi
 
 # Check user
-sudo yunohost user list --json | grep -q '"username": "$user"'
+sudo yunohost user list --json | grep -q "\"username\": \"$user\""
 if [[ ! $? -eq 0 ]]; then
 echo "Wrong user"
     exit 1