diff --git a/paddle/majel/ddim.cc b/paddle/majel/ddim.cc
index e92d9afa0b6c71d42bd27b61fbc32b191aa73e01..f32408ed53074234873ec0ea8ee7f4e449e5e908 100644
--- a/paddle/majel/ddim.cc
+++ b/paddle/majel/ddim.cc
@@ -1,4 +1,4 @@
-#include <majel/ddim.h>
+#include "paddle/majel/ddim.h"
 
 namespace majel {
 
diff --git a/paddle/majel/ddim.h b/paddle/majel/ddim.h
index 64cebf895817e17ca665675712bfeda65d051a9e..7be756f8c098ba5aa3a5ff4380c90f4b90a55bb7 100644
--- a/paddle/majel/ddim.h
+++ b/paddle/majel/ddim.h
@@ -5,7 +5,7 @@
 #include <stdexcept>
 #include <vector>
 
-#include "majel/dim.h"
+#include "paddle/majel/dim.h"
 
 namespace majel {
 
diff --git a/paddle/majel/util.h b/paddle/majel/detail/cuda_assert.h
similarity index 93%
rename from paddle/majel/util.h
rename to paddle/majel/detail/cuda_assert.h
index ab21e1869f793d07d4382596a3e6f50b5de7ead1..9490d0ae3eff01bdb4403de710b7bfd878e87f03 100644
--- a/paddle/majel/util.h
+++ b/paddle/majel/detail/cuda_assert.h
@@ -30,10 +30,3 @@
 #define MAJEL_ASSERT(e) assert(e)
 #define MAJEL_ASSERT_MSG(e, m) assert((e) && (m))
 #endif
-
-namespace majel {
-namespace detail {
-
-inline int div_up(int x, int y) { return (x + y - 1) / y; }
-}
-}
diff --git a/paddle/majel/hostdevice.h b/paddle/majel/detail/hostdevice.h
similarity index 100%
rename from paddle/majel/hostdevice.h
rename to paddle/majel/detail/hostdevice.h
diff --git a/paddle/majel/dim.h b/paddle/majel/dim.h
index ba718ce5b7686b1b0040c3a54d0895d773f208f5..5eff4c05cc240de1f98fe09e8f3fa07efdd4b976 100644
--- a/paddle/majel/dim.h
+++ b/paddle/majel/dim.h
@@ -5,8 +5,8 @@
 #include <stdexcept>
 #include <type_traits>
 
-#include "majel/hostdevice.h"
-#include "majel/util.h"
+#include "paddle/majel/detail/hostdevice.h"
+#include "paddle/majel/detail/util.h"
 
 namespace majel {
 
diff --git a/paddle/majel/place.cc b/paddle/majel/place.cc
index eecd8e5b730704258d2bd7d98a75a0a80e13a797..ca50b37843e0ba047f8f8b8d24a3d3c131587382 100644
--- a/paddle/majel/place.cc
+++ b/paddle/majel/place.cc
@@ -1,4 +1,4 @@
-#include <majel/place.h>
+#include "paddle/majel/place.h"
 
 namespace majel {
 
@@ -16,7 +16,7 @@ public:
   void operator()(const GpuPlace& p) { os_ << "GpuPlace(" << p.device << ")"; }
 };
 
-}  // namespace majel
+}  // namespace detail
 
 static Place the_default_place;
 
diff --git a/paddle/majel/test/ddim_test.cc b/paddle/majel/test/ddim_test.cc
index 5c604517961e8f02e2bc1f1c9fae1bf00fd18c7a..a5b8a7c4d26740c1c4169547e76a0cf5558facc0 100644
--- a/paddle/majel/test/ddim_test.cc
+++ b/paddle/majel/test/ddim_test.cc
@@ -4,7 +4,7 @@
 #include <vector>
 
 #include "gtest/gtest.h"
-#include "majel/ddim.h"
+#include "paddle/majel/ddim.h"
 
 TEST(DDim, Equality) {
   // construct a DDim from an initialization list
diff --git a/paddle/majel/test/dim_test.cu b/paddle/majel/test/dim_test.cu
index ed7c34ffd1da7dd27adb98da7823125a954bd972..a7d81e595bea7fa6326ea350e2702e1ef8f5caa4 100644
--- a/paddle/majel/test/dim_test.cu
+++ b/paddle/majel/test/dim_test.cu
@@ -1,7 +1,7 @@
 #include <thrust/device_vector.h>
 #include <sstream>
 
-#include "majel/dim.h"
+#include "paddle/majel/dim.h"
 #include "gtest/gtest.h"
 
 __global__ void test(majel::Dim<2>* o) {
diff --git a/paddle/majel/test/place_test.cc b/paddle/majel/test/place_test.cc
index c9a53802b23ef8b225b9e8ef0acfe1b0c5562289..6a099ae6b6e4f63a6ce845ab17eaab6e12c2c0b0 100644
--- a/paddle/majel/test/place_test.cc
+++ b/paddle/majel/test/place_test.cc
@@ -1,4 +1,4 @@
-#include "majel/place.h"
+#include "paddle/majel/place.h"
 #include <sstream>
 #include "gtest/gtest.h"