diff --git a/workflow/qhtcp-workflow b/workflow/qhtcp-workflow
index 727376dd..4164fd2b 100755
--- a/workflow/qhtcp-workflow
+++ b/workflow/qhtcp-workflow
@@ -419,7 +419,11 @@ interactive_header() {
   if [[ -z ${MODULES[*]} && -z ${EXCLUDE_MODULES[*]} ]]; then
     echo "Enter a comma-separated list of modules to run"
     ((YES)) || read -r -p "Hit Enter for all (default) or '0' for none: " response
-    if [[ -n $response && $response -ne 0 ]]; then
+    if [[ -z $response ]]; then
+      MODULES=("${ALL_MODULES[@]}")
+    elif [[ $response -eq 0 ]]; then
+      EXCLUDE_MODULES=("${ALL_MODULES[@]}")
+    else
       IFS=',' read -ra arr <<< "$response"
       for i in "${arr[@]}"; do
         MODULES+=("${ALL_MODULES[$((i-1))]}")