diff --git a/public/app/plugins/datasource/tempo/SearchTraceQLEditor/SearchField.tsx b/public/app/plugins/datasource/tempo/SearchTraceQLEditor/SearchField.tsx
index 3049ba3c375..2c7c119ffec 100644
--- a/public/app/plugins/datasource/tempo/SearchTraceQLEditor/SearchField.tsx
+++ b/public/app/plugins/datasource/tempo/SearchTraceQLEditor/SearchField.tsx
@@ -160,9 +160,9 @@ const SearchField = ({
           value={filter.value}
           onChange={(val) => {
             if (Array.isArray(val)) {
-              updateFilter({ ...filter, value: val.map((v) => v.value), valueType: val[0]?.type });
+              updateFilter({ ...filter, value: val.map((v) => v.value), valueType: val[0]?.type || uniqueOptionType });
             } else {
-              updateFilter({ ...filter, value: val?.value, valueType: val?.type });
+              updateFilter({ ...filter, value: val?.value, valueType: val?.type || uniqueOptionType });
             }
           }}
           placeholder="Select value"