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-rw-r--r--src/projections/comill.cpp3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/projections/comill.cpp b/src/projections/comill.cpp
index afcfbf7f..189e583e 100644
--- a/src/projections/comill.cpp
+++ b/src/projections/comill.cpp
@@ -59,7 +59,8 @@ static PJ_LP comill_s_inverse (PJ_XY xy, PJ *P) { /* Spheroidal, inver
y2 = yc * yc;
f = (yc * (K1 + y2 * (K2 + K3 * y2))) - xy.y;
fder = C1 + y2 * (C2 + C3 * y2);
- yc -= tol = f / fder;
+ tol = f / fder;
+ yc -= tol;
if (fabs(tol) < EPS) {
break;
}