diff --git a/main/src/com/google/refine/expr/functions/Cross.java b/main/src/com/google/refine/expr/functions/Cross.java
index a5213b371..93189212b 100644
--- a/main/src/com/google/refine/expr/functions/Cross.java
+++ b/main/src/com/google/refine/expr/functions/Cross.java
@@ -82,7 +82,7 @@ public class Cross implements Function {
     
         writer.object();
         writer.key("description"); writer.value("join with another project by column");
-        writer.key("params"); writer.value("cell c, string projectName, string columnName");
+        writer.key("params"); writer.value("cell c or string value, string projectName, string columnName");
         writer.key("returns"); writer.value("array");
         writer.endObject();
     }