1 files changed, 6 insertions, 5 deletions
diff --git a/src/pj_internal.c b/src/pj_internal.c
index dc528649..58ea9b48 100644
--- a/src/pj_internal.c
+++ b/src/pj_internal.c
@@ -28,10 +28,14 @@
  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  * DEALINGS IN THE SOFTWARE.
  *****************************************************************************/
+
 #include <ctype.h>
-#include <stddef.h>
-#include <stdarg.h>
 #include <errno.h>
+#include <math.h>
+#include <stdarg.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
 
 #include "geodesic.h"
 #include "proj_internal.h"
@@ -134,7 +138,6 @@ void proj_context_set (PJ *P, PJ_CONTEXT *ctx) {
     if (0==ctx)
         ctx = pj_get_default_ctx ();
     pj_set_ctx (P, ctx);
-    return;
 }
 
 
@@ -143,7 +146,6 @@ void proj_context_inherit (PJ *parent, PJ *child) {
         pj_set_ctx (child, pj_get_default_ctx());
     else
         pj_set_ctx (child, pj_get_ctx(parent));
-    return;
 }
 
 
@@ -361,7 +363,6 @@ to that context.
     if (0==ctx)
         ctx = pj_get_default_ctx();
     pj_ctx_set_errno (ctx, err);
-    return;
 }
 
 /*  logging  */