diff --git a/tensorflow/compiler/xla/array.h b/tensorflow/compiler/xla/array.h
index ea75ad32d5d..2d5d078aa77 100644
--- a/tensorflow/compiler/xla/array.h
+++ b/tensorflow/compiler/xla/array.h
@@ -409,7 +409,7 @@ class Array {
 
   // Returns the total number of elements in the array.
   int64 num_elements() const {
-    return std::accumulate(sizes_.begin(), sizes_.end(), 1,
+    return std::accumulate(sizes_.begin(), sizes_.end(), 1LL,
                            std::multiplies<int64>());
   }
 
diff --git a/tensorflow/compiler/xla/service/indexed_array_analysis.cc b/tensorflow/compiler/xla/service/indexed_array_analysis.cc
index 8b2df325677..3531b7223fb 100644
--- a/tensorflow/compiler/xla/service/indexed_array_analysis.cc
+++ b/tensorflow/compiler/xla/service/indexed_array_analysis.cc
@@ -447,7 +447,7 @@ int64 FindSourcePositionForPassthroughResultDim(ArraySlice<int64> operand_shape,
 
   int64 indexed_source_subarray_size =
       std::accumulate(operand_shape.begin() + source_passthrough_dim + 1,
-                      operand_shape.end(), 1, std::multiplies<int64>());
+                      operand_shape.end(), 1LL, std::multiplies<int64>());
 
   return FindSuffixWithProduct(result_shape, indexed_source_subarray_size);
 }
@@ -764,7 +764,7 @@ IndexedArrayAnalysis::FoldReshapeOfGatherNoDegenerateDims(
       &new_scalar_indexed_source_shape, source_dim_for_new_scalar_indexed_node,
       scalar_indexed_source_shape.dimensions(scalar_indexed->source_dim()));
 
-  CHECK_EQ(c_accumulate(new_scalar_indexed_source_shape, 1l,
+  CHECK_EQ(c_accumulate(new_scalar_indexed_source_shape, 1LL,
                         std::multiplies<int64>()),
            ShapeUtil::ElementsIn(scalar_indexed_source_shape));