diff --git a/docs-2.0/3.ngql-guide/6.functions-and-expressions/10.collect.md b/docs-2.0/3.ngql-guide/6.functions-and-expressions/10.collect.md
index 47d308105c..83c5d2899d 100644
--- a/docs-2.0/3.ngql-guide/6.functions-and-expressions/10.collect.md
+++ b/docs-2.0/3.ngql-guide/6.functions-and-expressions/10.collect.md
@@ -28,7 +28,7 @@ nebula> UNWIND [1, 2, 1] AS a \
 nebula> UNWIND [1, 2, 1] AS a \
         RETURN a, collect(a), size(collect(a));
 +---+------------+------------------+
-| a | collect(a) | size(COLLECT(a)) |
+| a | collect(a) | size(collect(a)) |
 +---+------------+------------------+
 | 2 | [2]        | 1                |
 | 1 | [1, 1]     | 2                |