diff --git a/datafusion/expr/src/expr.rs b/datafusion/expr/src/expr.rs
index c495b5396f53..2df2acc87730 100644
--- a/datafusion/expr/src/expr.rs
+++ b/datafusion/expr/src/expr.rs
@@ -840,6 +840,12 @@ impl WindowFunction {
     }
 }
 
+/// Find DataFusion's built-in window function by name.
+#[deprecated(since = "44.0.0", note = "built-in window functions have been removed")]
+pub fn find_df_window_func(_name: &str) -> Option<WindowFunctionDefinition> {
+    None
+}
+
 /// EXISTS expression
 #[derive(Clone, PartialEq, Eq, PartialOrd, Hash, Debug)]
 pub struct Exists {