diff --git a/src/driver_topaseskr.cc b/src/driver_topaseskr.cc
index f6164ec..1e002ad 100644
--- a/src/driver_topaseskr.cc
+++ b/src/driver_topaseskr.cc
@@ -77,7 +77,7 @@ namespace
             "The current water flow.",
             DEFAULT_PRINT_PROPERTIES,
             Quantity::Flow,
-            VifScaling::Auto,
+            VifScaling::AutoSigned,
             FieldMatcher::build()
             .set(MeasurementType::Instantaneous)
             .set(VIFRange::VolumeFlow));