diff --git a/fj/src/shape_3d.rs b/fj/src/shape_3d.rs
index 5c49d92e8..83bb52dc4 100644
--- a/fj/src/shape_3d.rs
+++ b/fj/src/shape_3d.rs
@@ -11,7 +11,7 @@ pub enum Shape3d {
     Transform(Box<Transform>),
 
     /// The union of two 3-dimensional shapes
-    Union(Box<Union>),
+    Union(Box<Group>),
 }
 
 impl From<Shape3d> for Shape {
@@ -114,7 +114,7 @@ impl From<Sweep> for Shape3d {
 /// <https://github.com/hannobraun/Fornjot/issues/42>
 #[derive(Clone, Debug)]
 #[repr(C)]
-pub struct Union {
+pub struct Group {
     /// The first of the shapes
     pub a: Shape3d,
 
@@ -122,14 +122,14 @@ pub struct Union {
     pub b: Shape3d,
 }
 
-impl From<Union> for Shape {
-    fn from(shape: Union) -> Self {
+impl From<Group> for Shape {
+    fn from(shape: Group) -> Self {
         Self::Shape3d(Shape3d::Union(Box::new(shape)))
     }
 }
 
-impl From<Union> for Shape3d {
-    fn from(shape: Union) -> Self {
+impl From<Group> for Shape3d {
+    fn from(shape: Group) -> Self {
         Self::Union(Box::new(shape))
     }
 }
diff --git a/fj/src/syntax.rs b/fj/src/syntax.rs
index b62a693cf..bfc0b05c0 100644
--- a/fj/src/syntax.rs
+++ b/fj/src/syntax.rs
@@ -71,7 +71,7 @@ where
 }
 
 pub trait Union {
-    fn union<Other>(&self, other: &Other) -> crate::Union
+    fn union<Other>(&self, other: &Other) -> crate::Group
     where
         Other: Clone + Into<crate::Shape3d>;
 }
@@ -80,13 +80,13 @@ impl<T> Union for T
 where
     T: Clone + Into<crate::Shape3d>,
 {
-    fn union<Other>(&self, other: &Other) -> crate::Union
+    fn union<Other>(&self, other: &Other) -> crate::Group
     where
         Other: Clone + Into<crate::Shape3d>,
     {
         let a = self.clone().into();
         let b = other.clone().into();
 
-        crate::Union { a, b }
+        crate::Group { a, b }
     }
 }
diff --git a/src/kernel/shapes/union.rs b/src/kernel/shapes/union.rs
index 0bcdcb2b2..9b2fffe25 100644
--- a/src/kernel/shapes/union.rs
+++ b/src/kernel/shapes/union.rs
@@ -15,7 +15,7 @@ use crate::{
 
 use super::ToShape;
 
-impl ToShape for fj::Union {
+impl ToShape for fj::Group {
     fn to_shape(&self, tolerance: Scalar, debug_info: &mut DebugInfo) -> Shape {
         let mut shape = Shape::new();