diff --git a/src/cudamatrix/cu-matrixdim.h b/src/cudamatrix/cu-matrixdim.h
index dab7bd40eb2..74912dad6e3 100644
--- a/src/cudamatrix/cu-matrixdim.h
+++ b/src/cudamatrix/cu-matrixdim.h
@@ -26,16 +26,10 @@
 /*
  * Typedefs needed for ANSI-C interface of CUDA wrappers
  */
-#ifdef _MSC_VER
-  typedef unsigned __int32 uint32_cuda;
-  typedef __int32          int32_cuda;
-  typedef __int32          MatrixIndexT_cuda; // you'd have to change this if you changed MatrixIndexT from int32.
-#else
-  #include <stdint.h>
-  typedef uint32_t         uint32_cuda;
-  typedef int32_t          int32_cuda;
-  typedef int32_t          MatrixIndexT_cuda; // you'd have to change this if you changed MatrixIndexT from int32.
-#endif
+#include <cstdint>
+typedef uint32_t         uint32_cuda;
+typedef int32_t          int32_cuda;
+typedef int32_t          MatrixIndexT_cuda; // you'd have to change this if you changed MatrixIndexT from int32.
 
 template<typename Real>
 struct MatrixElement {