diff --git a/datafusion/expr-common/src/signature.rs b/datafusion/expr-common/src/signature.rs
index c9b3577ea7fae..1d48dc565b62b 100644
--- a/datafusion/expr-common/src/signature.rs
+++ b/datafusion/expr-common/src/signature.rs
@@ -645,7 +645,6 @@ mod tests {
             TypeSignature::Exact(vec![DataType::Utf8]),
             TypeSignature::Uniform(1, vec![DataType::Float64]),
             TypeSignature::Any(1),
-            TypeSignature::VariadicAny,
             TypeSignature::OneOf(vec![
                 TypeSignature::Exact(vec![DataType::Int8]),
                 TypeSignature::Uniform(1, vec![DataType::Int8]),