diff --git a/libm/i387/fenv.c b/libm/i387/fenv.c
index 2794faf..aabe270 100644
--- a/libm/i387/fenv.c
+++ b/libm/i387/fenv.c
@@ -153,7 +153,8 @@
 int
 feupdateenv(const fenv_t *envp)
 {
-	int mxcsr, status;
+	int mxcsr;
+	short status;
 
 	__fnstsw(&status);
 	if (__HAS_SSE())
diff --git a/libm/include/i387/fenv.h b/libm/include/i387/fenv.h
index b124366..4281f10 100644
--- a/libm/include/i387/fenv.h
+++ b/libm/include/i387/fenv.h
@@ -102,7 +102,7 @@
 #define	__fnclex()		__asm __volatile("fnclex")
 #define	__fnstenv(__env)	__asm __volatile("fnstenv %0" : "=m" (*(__env)))
 #define	__fnstcw(__cw)		__asm __volatile("fnstcw %0" : "=m" (*(__cw)))
-#define	__fnstsw(__sw)		__asm __volatile("fnstsw %0" : "=am" (*(__sw)))
+#define	__fnstsw(__sw)		__asm __volatile("fnstsw %0" : "=a" (*(__sw)))
 #define	__fwait()		__asm __volatile("fwait")
 #define	__ldmxcsr(__csr)	__asm __volatile("ldmxcsr %0" : : "m" (__csr))
 #define	__stmxcsr(__csr)	__asm __volatile("stmxcsr %0" : "=m" (*(__csr)))
@@ -148,7 +148,8 @@
 static __inline int
 fetestexcept(int __excepts)
 {
-	int __mxcsr, __status;
+	int __mxcsr;
+	short __status;
 
 	__fnstsw(&__status);
 	if (__HAS_SSE())