1 files changed, 1 insertions, 1 deletions
diff --git a/src/PJ_bipc.cpp b/src/PJ_bipc.cpp
index 95cbcbb8..19a6bbe1 100644
--- a/src/PJ_bipc.cpp
+++ b/src/PJ_bipc.cpp
@@ -164,7 +164,7 @@ static LP s_inverse (XY xy, PJ *P) {           /* Spheroidal, inverse */
 
 PJ *PROJECTION(bipc) {
     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;