diff --git a/src/frontend/com_measure2.c b/src/frontend/com_measure2.c
index f2537582f..958a9c1b8 100644
--- a/src/frontend/com_measure2.c
+++ b/src/frontend/com_measure2.c
@@ -758,7 +758,11 @@ measure_minMaxAvg(
                 value = get_value(meas, d, i); //d->v_compdata[i].cx_real;
             else
                 value = d->v_realdata[i];
-            svalue = dScale->v_realdata[i];
+            if (dScale->v_realdata)
+                svalue = dScale->v_realdata[i];
+            else
+                /* may happen if you write an sp vector and load it again */
+                svalue = dScale->v_compdata[i].cx_real;
         } else {
             value = d->v_realdata[i];
             svalue = dScale->v_realdata[i];