diff --git a/skeletons/REAL.c b/skeletons/REAL.c
index 6ce124e..b03a70d 100644
--- a/skeletons/REAL.c
+++ b/skeletons/REAL.c
@@ -12,8 +12,8 @@
 #undef	INT_MAX
 #define	INT_MAX	((int)(((unsigned int)-1) >> 1))
 
-#ifndef	NAN
 static const double real_zero;
+#ifndef	NAN
 #define	NAN	(real_zero/real_zero)
 #endif