1 files changed, 2 insertions, 2 deletions
diff --git a/src/projections/chamb.cpp b/src/projections/chamb.cpp
index 36609e79..1b926b8a 100644
--- a/src/projections/chamb.cpp
+++ b/src/projections/chamb.cpp
@@ -29,7 +29,7 @@ PROJ_HEAD(chamb, "Chamberlin Trimetric") "\n\tMisc Sph, no inv"
 #define TOL 1e-9
 
 /* distance and azimuth from point 1 to point 2 */
-static VECT vect(projCtx ctx, double dphi, double c1, double s1, double c2, double s2, double dlam) {
+static VECT vect(PJ_CONTEXT *ctx, double dphi, double c1, double s1, double c2, double s2, double dlam) {
     VECT v;
     double cdl, dp, dl;
 
@@ -49,7 +49,7 @@ static VECT vect(projCtx ctx, double dphi, double c1, double s1, double c2, doub
 }
 
 /* law of cosines */
-static double lc(projCtx ctx, double b,double c,double a) {
+static double lc(PJ_CONTEXT *ctx, double b,double c,double a) {
     return aacos(ctx, .5 * (b * b + c * c - a * a) / (b * c));
 }