diff --git a/src/structs/mod.rs b/src/structs/mod.rs
index c5354463..7af9a619 100644
--- a/src/structs/mod.rs
+++ b/src/structs/mod.rs
@@ -35,7 +35,7 @@ mod sim;
 mod persp;
 mod ortho;
 
-// specialization for some 1d, 2d and 3d operations
+// Specialization for some 1d, 2d and 3d operations.
 #[doc(hidden)]
 mod spec {
     mod identity;