diff --git a/target/bin/delmailuser b/target/bin/delmailuser
index b3740432..c52668ce 100755
--- a/target/bin/delmailuser
+++ b/target/bin/delmailuser
@@ -101,7 +101,7 @@ do
 
   if [[ -f ${DATABASE} ]]
   then
-    if ! sed -i "/^${EMAIL}|/d" "${DATABASE}"
+    if ! sedfile -i "/^${EMAIL}|/d" "${DATABASE}"
     then
       echo "${UNESCAPED_EMAIL} couldn't be deleted in ${DATABASE}." >&2
       ERROR=true
@@ -126,7 +126,7 @@ do
   # remove quota directives
   if [[ -f ${QUOTA_DATABASE} ]]
   then
-    if ! sed -i -e "/^${EMAIL}:.*$/d" "${QUOTA_DATABASE}"
+    if ! sedfile -i -e "/^${EMAIL}:.*$/d" "${QUOTA_DATABASE}"
     then
       echo "Quota for ${UNESCAPED_EMAIL} couldn't be deleted in ${QUOTA_DATABASE}." >&2
     fi