diff --git a/caffe2/contrib/shm_mutex/shm_mutex.h b/caffe2/contrib/shm_mutex/shm_mutex.h
index f2dc4ff97e8..8f0293caf5f 100644
--- a/caffe2/contrib/shm_mutex/shm_mutex.h
+++ b/caffe2/contrib/shm_mutex/shm_mutex.h
@@ -58,7 +58,7 @@ class ShmProcessMutexCheck {
 template <class Derived>
 struct shm_traits;
 
-using ShmBaseHeader = struct {
+struct ShmBaseHeader {
   std::atomic<bool> isInitialized;
   std::atomic<int> countMapped;
   std::atomic<pid_t> owner;
diff --git a/caffe2/image/image_input_op.h b/caffe2/image/image_input_op.h
index 5d72898bfc6..d1c27e0845a 100644
--- a/caffe2/image/image_input_op.h
+++ b/caffe2/image/image_input_op.h
@@ -62,7 +62,7 @@ class ImageInputOp final : public PrefetchOperator<Context> {
   bool CopyPrefetched() override;
 
  private:
-  using BoundingBox = struct {
+  struct BoundingBox {
     bool valid;
     int ymin;
     int xmin;
@@ -73,7 +73,7 @@ class ImageInputOp final : public PrefetchOperator<Context> {
   // Structure to store per-image information
   // This can be modified by the DecodeAnd* so needs
   // to be privatized per launch.
-  using PerImageArg = struct { BoundingBox bounding_params; };
+  struct PerImageArg { BoundingBox bounding_params; };
 
   bool GetImageAndLabelAndInfoFromDBValue(
       const string& value,