diff --git a/utils.py b/utils.py
index a679677..621839a 100644
--- a/utils.py
+++ b/utils.py
@@ -728,6 +728,10 @@ method=auto
                 elif isinstance(value, (int, float)):
                     current_config[key] = value
                 elif isinstance(value, list):
+                    # Lets boot any values in a list that are just empty strings
+                    for val in value[:]:
+                        if val == "" :
+                            value.remove(val)
                     current_config[key] = value
                 elif isinstance(value, str):
                     if value.replace('.', '', 1).isdigit():
diff --git a/web/scripts/config.js b/web/scripts/config.js
index 583a706..633ad34 100644
--- a/web/scripts/config.js
+++ b/web/scripts/config.js
@@ -68,12 +68,21 @@ function generateConfigForm(config) {
     
         const formData = new FormData(formElement);
         const formDataObj = {};
-    
+        // Each of these fields contains an array of data.  Lets track these so we can ensure the format remains an array for the underlying structure.
+        const arrayFields = [
+            "portlist",
+            "mac_scan_blacklist",
+            "ip_scan_blacklist",
+            "steal_file_names",
+            "steal_file_extensions",
+        ];
+
         formData.forEach((value, key) => {
-            if (value.includes(',')) {
+            // Check if the input from the user contains a `,` character or is a known array field
+            if (value.includes(',') || arrayFields.includes(key)) {
                 formDataObj[key] = value.split(',').map(item => {
                     const trimmedItem = item.trim();
-                    return isNaN(trimmedItem) ? trimmedItem : parseFloat(trimmedItem);
+                    return isNaN(trimmedItem) || trimmedItem == "" ? trimmedItem : parseFloat(trimmedItem);
                 });
             } else {
                 formDataObj[key] = value === 'on' ? true : (isNaN(value) ? value : parseFloat(value));