diff --git a/vortex-array/src/scalar_fn/unstable/row/batch/execute/constant.rs b/vortex-array/src/scalar_fn/unstable/row/batch/execute/constant.rs
index 0cd60e821b6..bcc61068562 100644
--- a/vortex-array/src/scalar_fn/unstable/row/batch/execute/constant.rs
+++ b/vortex-array/src/scalar_fn/unstable/row/batch/execute/constant.rs
@@ -1,7 +1,6 @@
 // SPDX-License-Identifier: Apache-2.0
 // SPDX-FileCopyrightText: Copyright the Vortex contributors
 
-use smallvec::SmallVec;
 use vortex_error::VortexResult;
 
 use super::super::RowFnExecutionArgs;
@@ -18,14 +17,11 @@ impl RowFnExecutionArgs {
         kernel: impl Fn(BorrowedRowFnArgs<'_>, &mut ExecutionCtx) -> VortexResult<ArrayRef>,
         ctx: &mut ExecutionCtx,
     ) -> VortexResult<ArrayRef> {
-        let one_row: SmallVec<[ArrayRef; 4]> = self
-            .inputs
-            .iter()
-            .map(|input| input.slice(0..1))
-            .collect::<VortexResult<_>>()?;
-
-        let result =
-            self.validate_kernel_output(kernel(self.execution_args(&one_row, 1), ctx)?, 1, ctx)?;
+        let result = self.validate_kernel_output(
+            kernel(self.execution_args(&self.inputs, 1), ctx)?,
+            1,
+            ctx,
+        )?;
         let result = self.finalize_output(result, 1)?;
         let scalar = result.execute_scalar(0, ctx)?;