diff --git a/docs/design_docs/query_boolean_expr.md b/docs/design_docs/query_boolean_expr.md
index 63c9efa23e..8bcaad18ef 100644
--- a/docs/design_docs/query_boolean_expr.md
+++ b/docs/design_docs/query_boolean_expr.md
@@ -81,7 +81,7 @@ After syntax analysis, the following rules will be applied:
 3. CompareExpr between non-vector columns of different types is available.
 4. The modulo operation requires all operands to be integers.
 5. Integer columns can only match integer operands. While float columns can match both integer and float operands.
-6. In BinaryOp, the `and`/`&&` operator has higher priority than the `or`/`||` operator.
+6. In BinaryOp, the `and`/`&&` operator has a higher priority than the `or`/`||` operator.
 
 Example：