diff --git a/R-package/src/ndarray.cc b/R-package/src/ndarray.cc
index 94d24f3fb46b..d08671a3f026 100644
--- a/R-package/src/ndarray.cc
+++ b/R-package/src/ndarray.cc
@@ -179,8 +179,8 @@ Rcpp::RObject NDArrayPacker::CreateNDArrayPacker() {
 }
 
 Rcpp::Dimension NDArray::dim() const {
-  mx_uint ndim;
-  const mx_uint *pshape;
+  int ndim;
+  const int *pshape;
   MX_CALL(MXNDArrayGetShape(
       ptr_->handle, &ndim, &pshape));
   Rcpp::IntegerVector dat(pshape, pshape + ndim);
diff --git a/R-package/src/symbol.cc b/R-package/src/symbol.cc
index 031c9a254019..90ff9ef1dd67 100644
--- a/R-package/src/symbol.cc
+++ b/R-package/src/symbol.cc
@@ -167,8 +167,8 @@ Symbol::RObjectType Symbol::GetOutput(mx_uint index) const {
 
 // helper function to convert shape into Rcpp vector
 inline Rcpp::List BuildShapeData(mx_uint shape_size,
-                                 const mx_uint *shape_ndim,
-                                 const mx_uint **shape_data,
+                                 const int *shape_ndim,
+                                 const int **shape_data,
                                  const std::vector<std::string> &names) {
   Rcpp::List ret(shape_size);
   for (mx_uint i = 0; i < shape_size; ++i) {
@@ -185,7 +185,7 @@ SEXP Symbol::InferShape(const Rcpp::List& kwargs) const {
       << "Need to pass parameters in key=value style.\n";
   std::vector<std::string> keys = kwargs.names();
   std::vector<mx_uint> arg_ind_ptr(1, 0);
-  std::vector<mx_uint> arg_shape_data;
+  std::vector<int> arg_shape_data;
 
   for (size_t i = 0; i < kwargs.size(); ++i) {
     RCHECK(keys[i].length() != 0)
@@ -197,14 +197,14 @@ SEXP Symbol::InferShape(const Rcpp::List& kwargs) const {
   std::vector<const char*> c_keys = CKeys(keys);
 
   mx_uint in_shape_size;
-  const mx_uint *in_shape_ndim;
-  const mx_uint **in_shape_data;
+  const int *in_shape_ndim;
+  const int **in_shape_data;
   mx_uint out_shape_size;
-  const mx_uint *out_shape_ndim;
-  const mx_uint **out_shape_data;
+  const int *out_shape_ndim;
+  const int **out_shape_data;
   mx_uint aux_shape_size;
-  const mx_uint *aux_shape_ndim;
-  const mx_uint **aux_shape_data;
+  const int *aux_shape_ndim;
+  const int **aux_shape_data;
   int complete;
 
   MX_CALL(MXSymbolInferShape(