diff --git a/lib/libm/sf_ldexp.c b/lib/libm/sf_ldexp.c
index 32a134eea1..a0941df9fd 100644
--- a/lib/libm/sf_ldexp.c
+++ b/lib/libm/sf_ldexp.c
@@ -32,7 +32,7 @@
 	float value; int exp;
 #endif
 {
-	if(!finitef(value)||value==(float)0.0) return value;
+	if(!isfinite(value)||value==(float)0.0) return value;
 	value = scalbnf(value,exp);
 	//if(!finitef(value)||value==(float)0.0) errno = ERANGE;
 	return value;