diff --git a/include/libc/libc_limits.h b/include/libc/libc_limits.h
index 2b49db97d9e75c95ef03b3a88bedeb381a64bf99..b8368160dfb9fdcaa507613e3d4aa6ac0cc965b7 100644
--- a/include/libc/libc_limits.h
+++ b/include/libc/libc_limits.h
@@ -12,6 +12,7 @@
 #define LIBC_LIMITS_H__
 
 #include <limits.h>
+#include <rtconfig.h>
 
 #ifdef RT_USING_POSIX
 
diff --git a/include/libc/libc_stdio.h b/include/libc/libc_stdio.h
index 05505836304e68248a5b1a0ac495faff1b0b744c..85ba50985227ad890e8b1701c4a5561bf0fcea68 100644
--- a/include/libc/libc_stdio.h
+++ b/include/libc/libc_stdio.h
@@ -11,6 +11,8 @@
 #ifndef LIBC_STDIO_H__
 #define LIBC_STDIO_H__
 
+#include <rtconfig.h>
+
 #ifdef RT_USING_POSIX_GETLINE
 
 #include <posix_getline.h>