diff --git a/targets/TARGET_NUVOTON/nu_bitutil.h b/targets/TARGET_NUVOTON/nu_bitutil.h
index ce76e75..7ca8899 100644
--- a/targets/TARGET_NUVOTON/nu_bitutil.h
+++ b/targets/TARGET_NUVOTON/nu_bitutil.h
@@ -17,9 +17,6 @@
 #ifndef NU_BIT_UTIL_H
 #define NU_BIT_UTIL_H
 
-#if defined(__ICCARM__) && ( defined(__CORTEX_M0) || defined(__CORTEX_M0P) || defined(__CORTEX_M23))
-#include <arm_math.h>
-#endif
 #include "cmsis.h"
 
 #ifdef __cplusplus