diff --git a/include/bx/readerwriter.h b/include/bx/readerwriter.h
index bed18d0..47c5899 100644
--- a/include/bx/readerwriter.h
+++ b/include/bx/readerwriter.h
@@ -401,7 +401,7 @@ namespace bx
 			}
 
 			int64_t remainder = m_top-m_pos;
-			int32_t size = uint32_min(_size, int32_t(remainder > INT32_MAX ? INT32_MAX : remainder) );
+			int32_t size = uint32_min(_size, uint32_t(int64_min(remainder, INT32_MAX) ) );
 			m_pos += size;
 			if (size != _size)
 			{
@@ -454,7 +454,7 @@ namespace bx
 			BX_CHECK(NULL != _err, "Reader/Writer interface calling functions must handle errors.");
 
 			int64_t remainder = m_top-m_pos;
-			int32_t size = uint32_min(_size, int32_t(remainder > INT32_MAX ? INT32_MAX : remainder) );
+			int32_t size = uint32_min(_size, uint32_t(int64_min(remainder, INT32_MAX) ) );
 			memcpy(_data, &m_data[m_pos], size);
 			m_pos += size;
 			if (size != _size)
@@ -535,7 +535,7 @@ namespace bx
 			}
 
 			int64_t remainder = m_size-m_pos;
-			int32_t size = uint32_min(_size, int32_t(remainder > INT32_MAX ? INT32_MAX : remainder) );
+			int32_t size = uint32_min(_size, uint32_t(int64_min(remainder, INT32_MAX) ) );
 			memcpy(&m_data[m_pos], _data, size);
 			m_pos += size;
 			m_top = int64_max(m_top, m_pos);