diff --git a/include/openlibm_fenv_arm.h b/include/openlibm_fenv_arm.h
index 0d2ef7b..8ada694 100644
--- a/include/openlibm_fenv_arm.h
+++ b/include/openlibm_fenv_arm.h
@@ -31,6 +31,8 @@
 
 #include <stdint.h>
 
+#include "cdefs-compat.h"
+
 #ifndef	__fenv_static
 #define	__fenv_static	static
 #endif