diff --git a/src/freedombone-utils-ssh b/src/freedombone-utils-ssh
index 67367b7b..8fed11f8 100755
--- a/src/freedombone-utils-ssh
+++ b/src/freedombone-utils-ssh
@@ -59,8 +59,8 @@ function configure_ssh {
     if ! grep -q 'HostbasedAuthentication' /etc/ssh/sshd_config; then
         echo 'HostbasedAuthentication no' >> /etc/ssh/sshd_config
     fi
-    sed 's|#HostbasedAuthentication.*|HostbasedAuthentication no|g' /etc/ssh/sshd_config
-    sed 's|HostbasedAuthentication.*|HostbasedAuthentication no|g' /etc/ssh/sshd_config
+    sed -i 's|#HostbasedAuthentication.*|HostbasedAuthentication no|g' /etc/ssh/sshd_config
+    sed -i 's|HostbasedAuthentication.*|HostbasedAuthentication no|g' /etc/ssh/sshd_config
     sed -i 's|#PrintLastLog.*|PrintLastLog yes|g' /etc/ssh/sshd_config
     sed -i 's|PrintLastLog.*|PrintLastLog yes|g' /etc/ssh/sshd_config
     sed -i 's|#IgnoreRhosts.*|IgnoreRhosts yes|g' /etc/ssh/sshd_config