diff --git a/libc/cmake/modules/LLVMLibCTestRules.cmake b/libc/cmake/modules/LLVMLibCTestRules.cmake
--- a/libc/cmake/modules/LLVMLibCTestRules.cmake
+++ b/libc/cmake/modules/LLVMLibCTestRules.cmake
@@ -148,8 +148,7 @@
     ${fq_build_target_name}
     PRIVATE
       ${LIBC_SOURCE_DIR}
-      ${LIBC_BUILD_DIR}
-      ${LIBC_BUILD_DIR}/include
+      ${LIBC_INCLUDE_DIR}
   )
   target_compile_options(
     ${fq_build_target_name}
@@ -381,8 +380,7 @@
     ${fq_target_name}
     PRIVATE
       ${LIBC_SOURCE_DIR}
-      ${LIBC_BUILD_DIR}
-      ${LIBC_BUILD_DIR}/include
+      ${LIBC_INCLUDE_DIR}
   )
 
   target_link_libraries(${fq_target_name} PRIVATE 
@@ -512,8 +510,7 @@
     ${fq_build_target_name}
     PRIVATE
       ${LIBC_SOURCE_DIR}
-      ${LIBC_BUILD_DIR}
-      ${LIBC_BUILD_DIR}/include
+      ${LIBC_INCLUDE_DIR}
   )
   target_compile_options(${fq_build_target_name}
       PRIVATE -fpie -ffreestanding -fno-exceptions -fno-rtti ${INTEGRATION_TEST_COMPILE_OPTIONS})
@@ -677,8 +674,7 @@
     ${fq_build_target_name}
     PRIVATE
       ${LIBC_SOURCE_DIR}
-      ${LIBC_BUILD_DIR}
-      ${LIBC_BUILD_DIR}/include
+      ${LIBC_INCLUDE_DIR}
   )
   target_compile_options(${fq_build_target_name}
       PRIVATE ${LIBC_HERMETIC_TEST_COMPILE_OPTIONS} ${HERMETIC_TEST_COMPILE_OPTIONS})