diff --git a/configure.ac b/configure.ac
index cffda8b..a5ff9a9 100644
--- a/configure.ac
+++ b/configure.ac
@@ -21,7 +21,7 @@ AC_LANG([C++])
 AC_C_BIGENDIAN
 AC_TYPE_SIZE_T
 AC_TYPE_SSIZE_T
-AC_CHECK_HEADERS([stdint.h stddef.h sys/mman.h sys/resource.h windows.h byteswap.h sys/byteswap.h sys/endian.h sys/time.h])
+AC_CHECK_HEADERS([stdint.h stddef.h sys/uio.h sys/mman.h sys/resource.h windows.h byteswap.h sys/byteswap.h sys/endian.h sys/time.h])
 
 # Don't use AC_FUNC_MMAP, as it checks for mappings of already-mapped memory,
 # which we don't need (and does not exist on Windows).