diff --git a/Logic/Tags/TagUtils.ts b/Logic/Tags/TagUtils.ts
index ff47a8776d..94c60522b2 100644
--- a/Logic/Tags/TagUtils.ts
+++ b/Logic/Tags/TagUtils.ts
@@ -509,7 +509,7 @@ export class TagUtils {
         }
         if (typeof json != "string") {
             if (json["and"] !== undefined && json["or"] !== undefined) {
-                throw `Error while parsing a TagConfig: got an object where both 'and' and 'or' are defined`
+                throw `Error while parsing a TagConfig: got an object where both 'and' and 'or' are defined. Did you override a value? Perhaps use \`"=parent": { ... }\` instead of \"parent": {...}\` to trigger a replacement and not a fuse of values`
             }
             if (json["and"] !== undefined) {
                 return new And(json["and"].map((t) => TagUtils.Tag(t, context)))