diff --git a/core/src/execution/datafusion/expressions/if_expr.rs b/core/src/execution/datafusion/expressions/if_expr.rs
index 826f017c12..a1216d2b6e 100644
--- a/core/src/execution/datafusion/expressions/if_expr.rs
+++ b/core/src/execution/datafusion/expressions/if_expr.rs
@@ -112,8 +112,8 @@ impl PhysicalExpr for IfExpr {
 
     fn children(&self) -> Vec<Arc<dyn PhysicalExpr>> {
         vec![
-            self.true_expr.clone(),
             self.if_expr.clone(),
+            self.true_expr.clone(),
             self.false_expr.clone(),
         ]
     }