diff --git a/AOloopControl_IOtools/pl_column_sum.c b/AOloopControl_IOtools/pl_column_sum.c
index 7678487f..0c950bd6 100644
--- a/AOloopControl_IOtools/pl_column_sum.c
+++ b/AOloopControl_IOtools/pl_column_sum.c
@@ -97,7 +97,7 @@ static errno_t compute_function()
             float tot = 0.0;
             uint32_t j;
             for (j = 0; j < sizeouty; j++) {
-                uint64_t pixindex =  j*sizeoutx + i/;/i * sizeouty + j;
+                uint64_t pixindex =  j*sizeoutx + i;//i * sizeouty + j;
                 tot += wfsin.im->array.F[pixindex];
             }
             wfsout.im->array.F[i] = tot;