diff --git a/src/camera.rs b/src/camera.rs
index c654d66..290de7f 100644
--- a/src/camera.rs
+++ b/src/camera.rs
@@ -1,6 +1,5 @@
-use std::f32::consts::PI;
 
-use crate::{ray::Ray, vec3::Vec3};
+use crate::{ray::Ray, util::deg_to_rad, vec3::Vec3};
 
 #[derive(Debug)]
 pub struct Camera {
@@ -27,11 +26,6 @@ pub struct Camera {
     defocus_disk_v: Vec3,
 }
 
-// FIXME (low priority): kinda out of place in this file.
-fn deg_to_rad(deg: f32) -> f32 {
-    deg * PI / 180.
-}
-
 impl Camera {
     pub fn new() -> Self {
         Self {
diff --git a/src/main.rs b/src/main.rs
index ae1b3b7..94bd04a 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,5 +1,6 @@
 #![feature(core_float_math)]
 
+mod util;
 mod camera;
 mod objects;
 mod ray;
diff --git a/src/util.rs b/src/util.rs
new file mode 100644
index 0000000..692e3f0
--- /dev/null
+++ b/src/util.rs
@@ -0,0 +1,6 @@
+use std::f32::consts::PI;
+
+pub(crate) fn deg_to_rad(deg: f32) -> f32 {
+    deg * PI / 180.
+}
+