diff --git a/crates/functions/src/stat/distributions.rs b/crates/functions/src/stat/distributions.rs
index 40e7d5223..cb2f0398a 100644
--- a/crates/functions/src/stat/distributions.rs
+++ b/crates/functions/src/stat/distributions.rs
@@ -173,13 +173,7 @@ fn df_arg(a: &[Arg], i: usize) -> R<f64> {
 
 pub(super) fn t_dist(a: &[Arg], _: C) -> R<Value> {
     let x = num(a, 0)?;
-    let v = num(a, 1)?.trunc();
-    if v == 0.0 {
-        return Err(CellError::Div0);
-    }
-    if v < 1.0 {
-        return Err(CellError::Num);
-    }
+    let v = df_arg(a, 1)?;
     let cum = boolean(a, 2)?;
     num_val(if cum { t_cdf(x, v) } else { t_pdf(x, v) })
 }
diff --git a/crates/functions/src/stat/tests.rs b/crates/functions/src/stat/tests.rs
index a5bb21f9b..86d9393dd 100644
--- a/crates/functions/src/stat/tests.rs
+++ b/crates/functions/src/stat/tests.rs
@@ -366,7 +366,7 @@ fn t_chi_f() {
     close_tol(ev("T.DIST.RT", vec![n(1.959999998), n(60.0)]), 0.027322465, D7);
     close_tol(ev("TDIST", vec![n(1.959999998), n(60.0), n(2.0)]), 0.054644930, D7);
     is_err(ev("TDIST", vec![n(-1.0), n(60.0), n(2.0)]), CellError::Num);
-    is_err(ev("T.DIST", vec![n(1.0), n(0.0), b(true)]), CellError::Div0);
+    is_err(ev("T.DIST", vec![n(1.0), n(0.0), b(true)]), CellError::Num);
     close_tol(ev("T.INV", vec![n(0.75), n(2.0)]), 0.8164966, D7);
     close_tol(ev("T.INV", vec![n(0.25), n(2.0)]), -0.8164966, D7);
     close_tol(ev("T.INV.2T", vec![n(0.546449), n(60.0)]), 0.606533, D7);
@@ -405,10 +405,10 @@ fn t_chi_f() {
 }
 
 #[test]
-fn t_dist_degrees_truncating_to_zero_return_div0() {
+fn t_dist_degrees_truncating_below_one_return_num() {
     for df in [0.0, 0.9, -0.1] {
-        is_err(ev("T.DIST", vec![n(0.0), n(df), b(false)]), CellError::Div0);
-        is_err(ev("T.DIST", vec![n(0.0), n(df), b(true)]), CellError::Div0);
+        is_err(ev("T.DIST", vec![n(0.0), n(df), b(false)]), CellError::Num);
+        is_err(ev("T.DIST", vec![n(0.0), n(df), b(true)]), CellError::Num);
     }
     is_err(ev("T.DIST", vec![n(0.0), n(-1.0), b(false)]), CellError::Num);
     close_tol(ev("T.DIST", vec![n(0.0), n(1.99), b(false)]), 1.0 / std::f64::consts::PI, 1e-15);