diff --git a/functions.sh b/functions.sh
index 733ac04..99639c5 100755
--- a/functions.sh
+++ b/functions.sh
@@ -419,6 +419,7 @@ getFileLocations() {
 buildStep() {
     local filename="$1"
     local suffix="$2"
+    unset build_step_files
 
     info "Locating buildStep files: ${filename##*/} suffix: ${suffix}"
     getFileLocations "build_step_files" "${filename}" "${suffix}"