diff --git a/libc/Android.bp b/libc/Android.bp
index 3ec75ee..a02139a 100644
--- a/libc/Android.bp
+++ b/libc/Android.bp
@@ -2036,6 +2036,7 @@
     license: "NOTICE",
 }
 
+// Not actually used in the NDK, but needed to build AOSP for mips.
 ndk_headers {
     name: "libc_asm_mips",
     from: "kernel/uapi/asm-mips",
@@ -2044,6 +2045,7 @@
     license: "NOTICE",
 }
 
+// Not actually used in the NDK, but needed to build AOSP for mips64.
 ndk_headers {
     name: "libc_asm_mips64",
     from: "kernel/uapi/asm-mips",