diff --git a/spcd/bootstrap.sh b/spcd/bootstrap.sh
index 9521e7a..1a945bd 100644
--- a/spcd/bootstrap.sh
+++ b/spcd/bootstrap.sh
@@ -201,7 +201,7 @@ _SPCD_RULE_RIGHT="╴"
 
 _SPCD_STEP_LEVEL=1
 
-spcd_step_wipe() {
+_spcd_step_wipe() {
     unset \
         "SPCD_STEP_${_SPCD_STEP_LEVEL}_INDEX" \
         "SPCD_STEP_${_SPCD_STEP_LEVEL}_LABEL"
@@ -382,11 +382,11 @@ spcd_step() {
 spcd_step_in() {
     [ -n "${1}" ] && spcd_step "${1}"
     _SPCD_STEP_LEVEL=$((_SPCD_STEP_LEVEL + 1))
-    spcd_step_wipe
+    _spcd_step_wipe
 }
 
 spcd_step_out() {
-    spcd_step_wipe
+    _spcd_step_wipe
     _SPCD_STEP_LEVEL=$((_SPCD_STEP_LEVEL - 1))
 }