1 files changed, 4 insertions, 1 deletions
diff --git a/src/PJ_merc.c b/src/PJ_merc.c
index 9123eae1..b75f9b11 100644
--- a/src/PJ_merc.c
+++ b/src/PJ_merc.c
@@ -1,9 +1,12 @@
 #define PJ_LIB__
+
+#include <float.h>
+#include <math.h>
+
 #include "proj_internal.h"
 #include "proj.h"
 #include "proj_math.h"
 #include "projects.h"
-#include <float.h>
 
 PROJ_HEAD(merc, "Mercator") "\n\tCyl, Sph&Ell\n\tlat_ts=";
 PROJ_HEAD(webmerc, "Web Mercator / Pseudo Mercator") "\n\tCyl, Sph\n\t";