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-rw-r--r--src/PJ_axisswap.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/PJ_axisswap.c b/src/PJ_axisswap.c
index 725077a8..f7e89c33 100644
--- a/src/PJ_axisswap.c
+++ b/src/PJ_axisswap.c
@@ -192,7 +192,7 @@ PJ *CONVERSION(axisswap,0) {
/* read axes numbers and signs */
for ( s = order, n = 0; *s != '\0' && n < 4; ) {
Q->axis[n] = abs(atoi(s))-1;
- if (Q->axis[n] < 0 || Q->axis[n] > 3) {
+ if (Q->axis[n] > 3) {
proj_log_error(P, "axisswap: invalid axis '%d'", Q->axis[n]);
return pj_default_destructor(P, PJD_ERR_AXIS);
}