diff --git a/setup.sh b/setup.sh
index 2839255..9d9fa7d 100755
--- a/setup.sh
+++ b/setup.sh
@@ -62,6 +62,7 @@ configPath="./etc.${hostname}"
 useSSL=0
 useCertbot=0
 generateDH=0
+noOSCP=0
 
 # set tags and files to update
 tag_servernames="<server name(s)>"
@@ -692,8 +693,8 @@ if [ "${useSSL}" -eq 1 ]; then
     sed -i -e "s%${tag_cachain}%${CAChainPath}%" "${configPath}/${file_mozmodern}"
     # comment OSCP lines if noOSCP=1
     if [ "${noOSCP}" -eq 1 ]; then
-        sed 's/^ssl_stapling/#ssl_stapling/g' "${configPath}/${file_mozmodern}"
-        sed 's/^ssl_trusted/#ssl_trusted/' "${configPath}/${file_mozmodern}"
+        sed -i 's/^ssl_stapling/#ssl_stapling/g' "${configPath}/${file_mozmodern}"
+        sed -i 's/^ssl_trusted/#ssl_trusted/' "${configPath}/${file_mozmodern}"
     fi
 fi