diff --git a/libc/test/src/stdlib/at_quick_exit_test.cpp b/libc/test/src/stdlib/at_quick_exit_test.cpp
index 1ed5a83a61b8d..c0aac4d20d92c 100644
--- a/libc/test/src/stdlib/at_quick_exit_test.cpp
+++ b/libc/test/src/stdlib/at_quick_exit_test.cpp
@@ -8,6 +8,7 @@
 
 #include "src/__support/CPP/array.h"
 #include "src/__support/CPP/utility.h"
+#include "src/stdlib/_Exit.h"
 #include "src/stdlib/at_quick_exit.h"
 #include "src/stdlib/quick_exit.h"
 #include "test/UnitTest/Test.h"
diff --git a/libc/test/src/stdlib/atexit_test.cpp b/libc/test/src/stdlib/atexit_test.cpp
index 24f8b0451f363..c25202ff54f69 100644
--- a/libc/test/src/stdlib/atexit_test.cpp
+++ b/libc/test/src/stdlib/atexit_test.cpp
@@ -8,6 +8,7 @@
 
 #include "src/__support/CPP/array.h"
 #include "src/__support/CPP/utility.h"
+#include "src/stdlib/_Exit.h"
 #include "src/stdlib/atexit.h"
 #include "src/stdlib/exit.h"
 #include "test/UnitTest/Test.h"