diff --git a/src/specificClass.js b/src/specificClass.js
index 073d3f3..c2b5768 100644
--- a/src/specificClass.js
+++ b/src/specificClass.js
@@ -24,9 +24,9 @@ class PumpingStation extends BaseDomain {
   // MeasurementContainer keeps the integrator's m³ unit on those streams
   // (FlowAggregator writes spill / underflow per tick).
   static unitPolicy = UnitPolicy.declare({
-    canonical: { flow: 'm3/s', pressure: 'Pa', power: 'W', temperature: 'K' },
+    canonical: { flow: 'm3/h', pressure: 'Pa', power: 'W', temperature: 'K' },
     output:    {
-      flow: 'm3/s', netFlowRate: 'm3/s', level: 'm', volume: 'm3',
+      flow: 'm3/h', netFlowRate: 'm3/h', level: 'm', volume: 'm3',
       overflowVolume: 'm3', underflowVolume: 'm3',
     },
     requireUnitForTypes: [],