diff --git a/pytorch3d/csrc/utils/vec2.h b/pytorch3d/csrc/utils/vec2.h
index f4550f91..a9daa074 100644
--- a/pytorch3d/csrc/utils/vec2.h
+++ b/pytorch3d/csrc/utils/vec2.h
@@ -19,7 +19,7 @@ template <
         std::is_same<T, double>::value || std::is_same<T, float>::value>>
 struct vec2 {
   T x, y;
-  typedef T scalar_t;
+  using scalar_t = T;
   vec2(T x, T y) : x(x), y(y) {}
 };
 
diff --git a/pytorch3d/csrc/utils/vec3.h b/pytorch3d/csrc/utils/vec3.h
index fc37bf5c..14fd915e 100644
--- a/pytorch3d/csrc/utils/vec3.h
+++ b/pytorch3d/csrc/utils/vec3.h
@@ -18,7 +18,7 @@ template <
         std::is_same<T, double>::value || std::is_same<T, float>::value>>
 struct vec3 {
   T x, y, z;
-  typedef T scalar_t;
+  using scalar_t = T;
   vec3(T x, T y, T z) : x(x), y(y), z(z) {}
 };