diff --git a/Cargo.lock b/Cargo.lock
index 912fe0c..7c2496a 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -447,7 +447,7 @@ dependencies = [
 
 [[package]]
 name = "factorion-math"
-version = "1.0.3"
+version = "1.0.4"
 dependencies = [
  "gmp-mpfr-sys",
  "rug",
diff --git a/factorion-math/Cargo.toml b/factorion-math/Cargo.toml
index 2d3a054..6cd65d6 100644
--- a/factorion-math/Cargo.toml
+++ b/factorion-math/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "factorion-math"
-version = "1.0.3"
+version = "1.0.4"
 edition = "2024"
 description = "The math (factorials and related functions) used by factorion"
 license = "MIT"
diff --git a/factorion-math/src/lib.rs b/factorion-math/src/lib.rs
index e14c99d..9884072 100644
--- a/factorion-math/src/lib.rs
+++ b/factorion-math/src/lib.rs
@@ -339,7 +339,10 @@ pub fn approximate_termial_digits_float(k: u32, n: Float) -> Integer {
 /// Will panic if `x` is not finite.
 pub fn adjust_approximate((x, e): (Float, Integer)) -> (Float, Integer) {
     let prec = x.prec();
-    let (extra, _) = (x.clone().ln() / Float::with_val(prec, 10).ln())
+    if x == 0.0 {
+        return (Float::with_val(prec, 0), Integer::ZERO.clone());
+    }
+    let (extra, _) = (x.clone().abs().ln() / Float::with_val(prec, 10).ln())
         .to_integer_round(rug::float::Round::Down)
         .unwrap_or_else(|| panic!("Got non-finite number, x was {x}"));
     let x = x / (Float::with_val(prec, 10).pow(extra.clone()));