diff --git a/libc/include/llvm-libc-types/CMakeLists.txt b/libc/include/llvm-libc-types/CMakeLists.txt
--- a/libc/include/llvm-libc-types/CMakeLists.txt
+++ b/libc/include/llvm-libc-types/CMakeLists.txt
@@ -38,10 +38,10 @@
 add_header(struct_sigaction HDR struct_sigaction.h)
 add_header(struct_tm HDR struct_tm.h)
 add_header(struct_utsname HDR struct_utsname.h)
-add_header(struct_timespec HDR struct_timespec.h)
 add_header(thrd_start_t HDR thrd_start_t.h)
 add_header(thrd_t HDR thrd_t.h DEPENDS .__thread_type)
 add_header(time_t HDR time_t.h)
+add_header(struct_timespec HDR struct_timespec.h DEPENDS .time_t)
 add_header(tss_t HDR tss_t.h)
 add_header(tss_dtor_t HDR tss_dtor_t.h)
 add_header(__atexithandler_t HDR __atexithandler_t.h)
diff --git a/libc/include/llvm-libc-types/struct_timespec.h b/libc/include/llvm-libc-types/struct_timespec.h
--- a/libc/include/llvm-libc-types/struct_timespec.h
+++ b/libc/include/llvm-libc-types/struct_timespec.h
@@ -13,6 +13,7 @@
 
 struct timespec {
   time_t tv_sec;      /* Seconds.  */
+  /* TODO: BIG_ENDIAN may require padding. */
   long   tv_nsec;     /* Nanoseconds.  */
 };
 
diff --git a/libc/test/src/time/nanosleep_test.cpp b/libc/test/src/time/nanosleep_test.cpp
--- a/libc/test/src/time/nanosleep_test.cpp
+++ b/libc/test/src/time/nanosleep_test.cpp
@@ -15,9 +15,8 @@
 
 namespace cpp = __llvm_libc::cpp;
 
-// TODO: When we have the code to read clocks, test that time has passed.
-
-TEST(LlvmLibcNanosleep, sleep) {
+TEST(LlvmLibcNanosleep, SmokeTest) {
+  // TODO: When we have the code to read clocks, test that time has passed.
   using __llvm_libc::testing::ErrnoSetterMatcher::Succeeds;
   errno = 0;