1 files changed, 2 insertions, 2 deletions
diff --git a/src/PJ_wink2.cpp b/src/PJ_wink2.cpp
index 3935372a..74a47283 100644
--- a/src/PJ_wink2.cpp
+++ b/src/PJ_wink2.cpp
@@ -43,13 +43,13 @@ static XY s_forward (LP lp, PJ *P) {           /* Spheroidal, forward */
 
 PJ *PROJECTION(wink2) {
     struct pj_opaque *Q = static_cast<struct pj_opaque*>(pj_calloc (1, sizeof (struct pj_opaque)));
-    if (0==Q)
+    if (nullptr==Q)
         return pj_default_destructor(P, ENOMEM);
     P->opaque = Q;
 
 	static_cast<struct pj_opaque*>(P->opaque)->cosphi1 = cos(pj_param(P->ctx, P->params, "rlat_1").f);
 	P->es  = 0.;
-    P->inv = 0;
+    P->inv = nullptr;
     P->fwd = s_forward;
 
     return P;