diff --git a/ChangeLog b/ChangeLog
index f382b3852..fb7b32de0 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2011-08-08  Robert Larice
+ * src/xspice/cm/cmutil.c :
+   ngspice.h always must be the first included file
+     because of "man feature_test_macros(7)"
+
 2011-08-08  Robert Larice
  * src/spicelib/analysis/dcpss.c :
    rewrite pointer dereferences to array subscripts
diff --git a/src/xspice/cm/cmutil.c b/src/xspice/cm/cmutil.c
index 3d9531523..664ae8965 100755
--- a/src/xspice/cm/cmutil.c
+++ b/src/xspice/cm/cmutil.c
@@ -48,10 +48,10 @@ NON-STANDARD FEATURES
     None.
 
 =========================================================================== */
+#include "ngspice.h" /* for NaN */
 #include <stdio.h>
 #include <math.h>
 #include "cm.h"
-#include "ngspice.h" /* for NaN */
  
 /* Corner Smoothing Function ************************************
 *                                                               *