diff --git a/toolchain/uClibc/uClibc.config b/toolchain/uClibc/uClibc.config
index 84a4d0b4de..e400ec4d13 100644
--- a/toolchain/uClibc/uClibc.config
+++ b/toolchain/uClibc/uClibc.config
@@ -62,6 +62,7 @@ UCLIBC_HAS_LFS=y
 MALLOC_STANDARD=y
 MALLOC_GLIBC_COMPAT=y
 UCLIBC_DYNAMIC_ATEXIT=y
+# COMPAT_ATEXIT is not set
 HAS_SHADOW=y
 # UNIX98PTY_ONLY is not set
 ASSUME_DEVPTS=y
diff --git a/toolchain/uClibc/uClibc.config-locale b/toolchain/uClibc/uClibc.config-locale
index d5ea601c41..49deccc2de 100644
--- a/toolchain/uClibc/uClibc.config-locale
+++ b/toolchain/uClibc/uClibc.config-locale
@@ -61,6 +61,7 @@ UCLIBC_HAS_LFS=y
 MALLOC_STANDARD=y
 MALLOC_GLIBC_COMPAT=y
 UCLIBC_DYNAMIC_ATEXIT=y
+# COMPAT_ATEXIT is not set
 HAS_SHADOW=y
 # UNIX98PTY_ONLY is not set
 ASSUME_DEVPTS=y