diff --git a/include/ck/utility/dtype_vector.hpp b/include/ck/utility/dtype_vector.hpp
index 8f70962fa6..9c40d923d3 100644
--- a/include/ck/utility/dtype_vector.hpp
+++ b/include/ck/utility/dtype_vector.hpp
@@ -2000,8 +2000,6 @@ struct vector_type<T, 64, typename ck::enable_if_t<!is_native_type<T>()>>
     }
 };
 
-using int64_t = long;
-
 // fp32
 using float2_t  = typename vector_type<float, 2>::type;
 using float4_t  = typename vector_type<float, 4>::type;
diff --git a/include/ck_tile/core/utility/magic_div.hpp b/include/ck_tile/core/utility/magic_div.hpp
index fd9c733c52..1715983c09 100644
--- a/include/ck_tile/core/utility/magic_div.hpp
+++ b/include/ck_tile/core/utility/magic_div.hpp
@@ -38,7 +38,7 @@ struct magic_division32_bit_range
             shift_u32++;
         };
 
-        uint64_t tmp_u64        = ((1UL << shift_u32) - divisor) << 32;
+        uint64_t tmp_u64        = static_cast<uint64_t>((1UL << shift_u32) - divisor) << 32;
         uint32_t multiplier_u32 = tmp_u64 / divisor + 1;
 
         return make_tuple(multiplier_u32, shift_u32);