diff --git a/webui/react/src/utils/flatRun.ts b/webui/react/src/utils/flatRun.ts
index c26f772af9e..34a85f677b4 100644
--- a/webui/react/src/utils/flatRun.ts
+++ b/webui/react/src/utils/flatRun.ts
@@ -123,6 +123,7 @@ export const removeColumnTypePrefix = (columnName: V1ColumnType): string => {
 };
 
 /// we want to use special characters as "separators" to prevent user input to match with such when creating the arbitrary metadata
+export const COLUMN_SEPARATOR = '␟';
 export const METADATA_SEPARATOR = '\u241F' as const;
 
 export const formatColumnKey = (col: ProjectColumn, required = false): string => {