diff --git a/panelctl.sh b/panelctl.sh
index 2730690..6cd1e6d 100644
--- a/panelctl.sh
+++ b/panelctl.sh
@@ -254,7 +254,8 @@ cmd_render_route() {
 
   # Strip any existing block for this app from the aggregate file.
   if [[ -f "${APP_ROUTE_FILE}" ]]; then
-    grep -v "^# route:${name}:" "${APP_ROUTE_FILE}" >"${tmp}" || true
+    # Use sed to remove the block between # route:name:start and # route:name:end
+    sed "/^# route:${name}:start$/,/^# route:${name}:end$/d" "${APP_ROUTE_FILE}" >"${tmp}" || true
   else
     printf "" >"${tmp}"
   fi
@@ -335,7 +336,7 @@ cmd_remove() {
   if [[ -f "${APP_ROUTE_FILE}" ]]; then
     local tmp
     tmp="$(mktemp)"
-    grep -v "^# route:${name}:" "${APP_ROUTE_FILE}" >"${tmp}"
+    sed "/^# route:${name}:start$/,/^# route:${name}:end$/d" "${APP_ROUTE_FILE}" >"${tmp}" || true
     mv "${tmp}" "${APP_ROUTE_FILE}"
   fi