diff --git a/libc/Makefile b/libc/Makefile
index 6855e226..7016b1d5 100644
--- a/libc/Makefile
+++ b/libc/Makefile
@@ -230,13 +230,10 @@ netdb/setservent.o \
 poll/poll.o \
 poll/ppoll.o \
 popen.o \
-preadv.o \
 print.o \
 putc.o \
 pwd/pwent.o \
-pwritev.o \
 readdirents.o \
-readv.o \
 removeat.o \
 remove.o \
 renameat.o \
@@ -297,6 +294,10 @@ sys/stat/umask.o \
 sys/stat/utimensat.o \
 sys/stat/utimens.o \
 sys/time/gettimeofday.o \
+sys/uio/preadv.o \
+sys/uio/pwritev.o \
+sys/uio/readv.o \
+sys/uio/writev.o \
 termios/tcgetwinsize.o \
 time/clock_getres.o \
 time/clock_gettime.o \
@@ -399,7 +400,6 @@ utime.o \
 vscanf.o \
 wait.o \
 waitpid.o \
-writev.o \
 
 OBJS=\
 $(FREEOBJS) \
diff --git a/libc/preadv.cpp b/libc/sys/uio/preadv.cpp
similarity index 98%
rename from libc/preadv.cpp
rename to libc/sys/uio/preadv.cpp
index 0ae1c9d7..35f4b9e2 100644
--- a/libc/preadv.cpp
+++ b/libc/sys/uio/preadv.cpp
@@ -17,7 +17,7 @@
     You should have received a copy of the GNU Lesser General Public License
     along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
 
-    preadv.cpp
+    sys/uio/preadv.cpp
     Read data into multiple buffers.
 
 *******************************************************************************/
diff --git a/libc/pwritev.cpp b/libc/sys/uio/pwritev.cpp
similarity index 98%
rename from libc/pwritev.cpp
rename to libc/sys/uio/pwritev.cpp
index ee6c3331..80024dac 100644
--- a/libc/pwritev.cpp
+++ b/libc/sys/uio/pwritev.cpp
@@ -17,7 +17,7 @@
     You should have received a copy of the GNU Lesser General Public License
     along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
 
-    pwritev.cpp
+    sys/uio/pwritev.cpp
     Write data from multiple buffers.
 
 *******************************************************************************/
diff --git a/libc/readv.cpp b/libc/sys/uio/readv.cpp
similarity index 98%
rename from libc/readv.cpp
rename to libc/sys/uio/readv.cpp
index b800b23c..5e27cec1 100644
--- a/libc/readv.cpp
+++ b/libc/sys/uio/readv.cpp
@@ -17,7 +17,7 @@
     You should have received a copy of the GNU Lesser General Public License
     along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
 
-    readv.cpp
+    sys/uio/readv.cpp
     Read data into multiple buffers.
 
 *******************************************************************************/
diff --git a/libc/writev.cpp b/libc/sys/uio/writev.cpp
similarity index 98%
rename from libc/writev.cpp
rename to libc/sys/uio/writev.cpp
index 26066cdc..2300e9cd 100644
--- a/libc/writev.cpp
+++ b/libc/sys/uio/writev.cpp
@@ -17,7 +17,7 @@
     You should have received a copy of the GNU Lesser General Public License
     along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
 
-    writev.cpp
+    sys/uio/writev.cpp
     Write data from multiple buffers.
 
 *******************************************************************************/