diff --git a/vegafusion-datafusion-udfs/src/udfs/math/isfinite.rs b/vegafusion-datafusion-udfs/src/udfs/math/isfinite.rs
index 367088c0..2769c910 100644
--- a/vegafusion-datafusion-udfs/src/udfs/math/isfinite.rs
+++ b/vegafusion-datafusion-udfs/src/udfs/math/isfinite.rs
@@ -1,3 +1,4 @@
+use datafusion_physical_expr::udf::ScalarUDF;
 use std::any::Any;
 use std::sync::Arc;
 use vegafusion_common::arrow::array::{BooleanArray, Float32Array, Float64Array};
@@ -76,3 +77,7 @@ impl ScalarUDFImpl for IsFiniteUDF {
         }
     }
 }
+
+lazy_static! {
+    pub static ref ISFINITE_UDF: ScalarUDF = ScalarUDF::from(IsFiniteUDF::new());
+}