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-rw-r--r--src/PJ_omerc.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/src/PJ_omerc.c b/src/PJ_omerc.c
index 51d398d2..c8888a83 100644
--- a/src/PJ_omerc.c
+++ b/src/PJ_omerc.c
@@ -104,7 +104,11 @@ ENTRY0(omerc)
gamma = pj_param(P->ctx, P->params, "rgamma").f;
if (alp || gam) {
lamc = pj_param(P->ctx, P->params, "rlonc").f;
- no_off = pj_param(P->ctx, P->params, "tno_off").i;
+ no_off =
+ /* For libproj4 compatability */
+ pj_param(P->ctx, P->params, "tno_off").i
+ /* for backward compatibility */
+ || pj_param(P->ctx, P->params, "tno_uoff").i;
} else {
lam1 = pj_param(P->ctx, P->params, "rlon_1").f;
phi1 = pj_param(P->ctx, P->params, "rlat_1").f;