diff --git a/src/maths/sparse/spsmp.c b/src/maths/sparse/spsmp.c
index f93acf349..94ae155d9 100644
--- a/src/maths/sparse/spsmp.c
+++ b/src/maths/sparse/spsmp.c
@@ -101,10 +101,10 @@
 #include <spmatrix.h>
 #include "spdefs.h"
 #include <smpdefs.h>
-
-#if defined (_MSC_VER)
-extern double scalbn(double, int);
-#endif
+
+#if defined (_MSC_VER)
+extern double scalbn(double, int);
+#endif
 
 static void LoadGmin(SMPmatrix *eMatrix, double Gmin);