diff --git a/libc/Makefile b/libc/Makefile
index 8464bcf3..4049c374 100644
--- a/libc/Makefile
+++ b/libc/Makefile
@@ -17,7 +17,7 @@ CXXFLAGS=-std=gnu++11 -fno-exceptions -fno-rtti
 ASFLAGS=
 
 FREEOBJS=\
-_assert.o \
+assert/_assert.o \
 clearerr.o \
 c++.o \
 ctype.o \
diff --git a/libc/_assert.cpp b/libc/assert/_assert.cpp
similarity index 98%
rename from libc/_assert.cpp
rename to libc/assert/_assert.cpp
index 6a848300..b0708ff9 100644
--- a/libc/_assert.cpp
+++ b/libc/assert/_assert.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/>.
 
-    _assert.cpp
+    assert/_assert.cpp
     Reports the occurence of an assertion failure.
 
 *******************************************************************************/
diff --git a/libc/sortix/assert/.gitignore b/libc/sortix/assert/.gitignore
new file mode 100644
index 00000000..e69de29b