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-rw-r--r--src/ell_set.cpp3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/ell_set.cpp b/src/ell_set.cpp
index f4228be8..4c9fc892 100644
--- a/src/ell_set.cpp
+++ b/src/ell_set.cpp
@@ -88,7 +88,8 @@ int pj_ellipsoid (PJ *P) {
/* Specifying R overrules everything */
if (pj_get_param (P->params, "R")) {
- ellps_size (P);
+ if (0 != ellps_size (P))
+ return 1;
pj_calc_ellipsoid_params (P, P->a, 0);
if (proj_errno (P))
return 1;