diff --git a/src/mlpack/bindings/go/mlpack/capi/cli_util.cpp b/src/mlpack/bindings/go/mlpack/capi/cli_util.cpp
index 4ec9af5880..3d27a2491a 100644
--- a/src/mlpack/bindings/go/mlpack/capi/cli_util.cpp
+++ b/src/mlpack/bindings/go/mlpack/capi/cli_util.cpp
@@ -155,7 +155,7 @@ bool mlpackGetParamBool(const char* identifier)
 void* mlpackGetVecIntPtr(const char* identifier)
 {
   const size_t size = mlpackVecIntSize(identifier);
-  int64_t* ints = new int64_t[size];
+  long long* ints = new long long[size];
 
   for (size_t i = 0; i < size; i++)
     ints[i] = CLI::GetParam<std::vector<int>>(identifier)[i];