diff --git a/bubble-server/src/main/java/bubble/app/request/RequestProtectorAppConfigDriver.java b/bubble-server/src/main/java/bubble/app/request/RequestProtectorAppConfigDriver.java
index 52dfcb7f..7d2b0080 100644
--- a/bubble-server/src/main/java/bubble/app/request/RequestProtectorAppConfigDriver.java
+++ b/bubble-server/src/main/java/bubble/app/request/RequestProtectorAppConfigDriver.java
@@ -62,15 +62,18 @@ public class RequestProtectorAppConfigDriver extends AppConfigDriverBase {
 
     private Set<HeaderReplacement> addHeaderReplacement(Account account, BubbleApp app, JsonNode data) {
         final JsonNode regexNode = data.get(PARAM_REGEX);
-        if (regexNode == null || regexNode.textValue() == null || empty(regexNode.textValue().trim())) {
+        if (regexNode == null || regexNode.textValue() == null) {
             throw invalidEx("err.requestProtector.headerRegexRequired");
         }
-        final String regex = regexNode.textValue().trim().toLowerCase();
+        final String regex = regexNode.textValue().trim();
+        if (empty(regex)) throw invalidEx("err.requestProtector.headerRegexRequired");
 
         final JsonNode replacementNode = data.get(PARAM_REPLACEMENT);
-        final String replacement = replacementNode == null || replacementNode.textValue() == null
-                                   ? ""
-                                   : replacementNode.textValue().trim().toLowerCase();
+        if (replacementNode == null || replacementNode.textValue() == null) {
+            throw invalidEx("err.requestProtector.headerReplacementRequired");
+        }
+        final String replacement = regexNode.textValue().trim();
+        if (empty(replacement)) throw invalidEx("err.requestProtector.headerReplacementRequired");
 
         final RequestProtectorConfig config = getConfig(account, app).addHeaderReplacement(regex, replacement);
 
diff --git a/bubble-server/src/main/resources/models/apps/request/bubbleApp_request.json b/bubble-server/src/main/resources/models/apps/request/bubbleApp_request.json
index 4a6e71e6..aa364178 100644
--- a/bubble-server/src/main/resources/models/apps/request/bubbleApp_request.json
+++ b/bubble-server/src/main/resources/models/apps/request/bubbleApp_request.json
@@ -68,8 +68,9 @@
         { "name": "config.action.addHeaderReplacement", "value": "Add" },
         { "name": "config.action.removeHeaderReplacement", "value": "Remove" },
 
-        { "name": "err.requestProtector.headerRegexRequired", "value": "RegEx field is required" }
+        { "name": "err.requestProtector.headerRegexRequired", "value": "RegEx field is required" },
+        { "name": "err.requestProtector.headerReplacementRequired", "value": "Replacement field is required" }
       ]
     }]
   }
-}]
\ No newline at end of file
+}]