diff --git a/deps/denormal/architecture.hpp b/deps/denormal/architecture.hpp
index 53be234..2082c0e 100644
--- a/deps/denormal/architecture.hpp
+++ b/deps/denormal/architecture.hpp
@@ -3,6 +3,9 @@
 #ifndef ARCHITECTURE_HPP
 #define ARCHITECTURE_HPP
 
+#include <cfenv>
+#include <fenv.h>
+
 // check cpu architecture
 
 #if /* x86_64 */ \
@@ -92,9 +95,11 @@ inline void disable_denormals() noexcept {
 			_mm_setcsr(_mm_getcsr() | 0x8040);
 		#endif
 	#elif defined(ARCH_ARM)
+		#if defined __has_builtin
 		#if __has_builtin(__builtin_arm_set_fpscr) && __has_builtin(__builtin_arm_get_fpscr)
 			__builtin_arm_set_fpscr(__builtin_arm_get_fpscr() | (1 << 24));
 		#endif
+		#endif
 	#endif
 
 }