1 files changed, 3 insertions, 2 deletions
diff --git a/src/PJ_cea.c b/src/PJ_cea.c
index e7a33899..e05e524b 100644
--- a/src/PJ_cea.c
+++ b/src/PJ_cea.c
@@ -1,5 +1,8 @@
 #define PJ_LIB__
+
 #include <errno.h>
+#include <math.h>
+
 #include "proj.h"
 #include "projects.h"
 
@@ -96,5 +99,3 @@ PJ *PROJECTION(cea) {
 
     return P;
 }
-
-