diff --git a/setup.sh b/setup.sh
index ced7189..588cb97 100644
--- a/setup.sh
+++ b/setup.sh
@@ -537,8 +537,8 @@ sed -i -e "s%${tag_sslkey}%${KeyPath}%" "${configPath}/${file_ssl}"
 
 # process mozModern SSL configuration
 echo "updating ${warn}${configPath}/${file_mozmodern}${norm}"
-echo -i -e "s%${tag_dhparam}%${DHPath}%" "${configPath}/${file_mozmodern}"
-echo -i -e "s%${tag_cachain}%${CAChainPath}%" "${configPath}/${file_mozmodern}"
+sed -i -e "s%${tag_dhparam}%${DHPath}%" "${configPath}/${file_mozmodern}"
+sed -i -e "s%${tag_cachain}%${CAChainPath}%" "${configPath}/${file_mozmodern}"