diff --git a/libs/libc/machine/arm/arch_mcount.S b/libs/libc/machine/arm/arch_mcount.S
index d9aa406d5a4..85a75e52b8d 100644
--- a/libs/libc/machine/arm/arch_mcount.S
+++ b/libs/libc/machine/arm/arch_mcount.S
@@ -18,6 +18,12 @@
  *
  ****************************************************************************/
 
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
 /****************************************************************************
  * Public Functions
  ****************************************************************************/