diff --git a/spcd/bootstrap.sh b/spcd/bootstrap.sh
index 08f8edc..223a224 100644
--- a/spcd/bootstrap.sh
+++ b/spcd/bootstrap.sh
@@ -10,6 +10,7 @@
 
 [ -n "${SPCD_GIT_MAIN}" ] || SPCD_GIT_MAIN="spcd"
 [ -n "${SPCD_GIT_ROOT}" ] || SPCD_GIT_ROOT="rwx"
+
 [ -n "${SPCD_GIT_SHUNIT}" ] || SPCD_GIT_SHUNIT="shunit2"
 
 [ -n "${SPCD_REF_FEATURE}" ] || SPCD_REF_FEATURE="f"
@@ -39,11 +40,11 @@
 # │ internals │
 # ╰───────────╯
 
-spcd_fill() {
-    spcd_fill__index=${1}
-    while [ "${spcd_fill__index}" -gt 0 ]; do
+_spcd_fill() {
+    _spcd_fill__index=${1}
+    while [ "${_spcd_fill__index}" -gt 0 ]; do
         printf "%s" "${2}"
-        spcd_fill__index=$((spcd_fill__index - 1))
+        _spcd_fill__index=$((_spcd_fill__index - 1))
     done
 }
 
@@ -65,7 +66,7 @@ spcd_banner_add() {
         spcd_ba__text=" ${1} "
         spcd_ba__length=${#spcd_ba__text}
         spcd_ba__filler="$(
-            spcd_fill "${spcd_ba__length}" "${SPCD_BANNER_HORIZONTAL}"
+            _spcd_fill "${spcd_ba__length}" "${SPCD_BANNER_HORIZONTAL}"
         )"
         if [ -n "${SPCD_BANNER_MIDDLE}" ]; then
             spcd_banner_split