diff --git a/src/mass_properties/mass_properties.rs b/src/mass_properties/mass_properties.rs
index 1fd833d0..351b334a 100644
--- a/src/mass_properties/mass_properties.rs
+++ b/src/mass_properties/mass_properties.rs
@@ -28,6 +28,7 @@ pub struct MassProperties {
     pub inv_mass: Real,
     /// The inverse of the principal angular inertia of the rigid-body.
     ///
+    /// The angular inertia is calculated relative to [`Self::local_com`].
     /// Components set to zero are assumed to be infinite along the corresponding principal axis.
     pub inv_principal_inertia_sqrt: AngVector<Real>,
     #[cfg(feature = "dim3")]
@@ -116,7 +117,7 @@ impl MassProperties {
         utils::inv(self.inv_mass)
     }
 
-    /// The angular inertia along the principal inertia axes of the rigid-body.
+    /// The angular inertia along the principal inertia axes and center of mass of the rigid-body.
     pub fn principal_inertia(&self) -> AngVector<Real> {
         #[cfg(feature = "dim2")]
         return utils::inv(self.inv_principal_inertia_sqrt * self.inv_principal_inertia_sqrt);
diff --git a/src/partitioning/qbvh/mod.rs b/src/partitioning/qbvh/mod.rs
index 87ca330a..cd72717b 100644
--- a/src/partitioning/qbvh/mod.rs
+++ b/src/partitioning/qbvh/mod.rs
@@ -1,8 +1,6 @@
 #[cfg(feature = "std")]
 pub use self::{
-    build::{
-        BuilderProxies, CenterDataSplitter, QbvhDataGenerator, QbvhNonOverlappingDataSplitter,
-    },
+    build::{CenterDataSplitter, QbvhDataGenerator, QbvhNonOverlappingDataSplitter},
     update::QbvhUpdateWorkspace,
 };
 
diff --git a/src/shape/triangle.rs b/src/shape/triangle.rs
index e0c9b6c6..79492ce4 100644
--- a/src/shape/triangle.rs
+++ b/src/shape/triangle.rs
@@ -559,7 +559,7 @@ impl Triangle {
 
     /// Reverse the orientation of this triangle by swapping b and c.
     pub fn reverse(&mut self) {
-        std::mem::swap(&mut self.b, &mut self.c);
+        mem::swap(&mut self.b, &mut self.c);
     }
 }