1 files changed, 3 insertions, 1 deletions
diff --git a/src/PJ_ocea.c b/src/PJ_ocea.c
index 4bd120e1..7a9353a6 100644
--- a/src/PJ_ocea.c
+++ b/src/PJ_ocea.c
@@ -1,5 +1,8 @@
 #define PJ_LIB__
+
 #include <errno.h>
+#include <math.h>
+
 #include "projects.h"
 
 PROJ_HEAD(ocea, "Oblique Cylindrical Equal Area") "\n\tCyl, Sph"
@@ -95,4 +98,3 @@ PJ *PROJECTION(ocea) {
 
     return P;
 }
-