diff --git a/src/reactor_sim/reactor.py b/src/reactor_sim/reactor.py
index 0f2980d..f4f7cf1 100644
--- a/src/reactor_sim/reactor.py
+++ b/src/reactor_sim/reactor.py
@@ -287,7 +287,7 @@ class Reactor:
                     pump_state.flow_rate, 0.0, dt, self.primary_pump.spool_time
                 )
                 pump_state.pressure = state.primary_loop.pressure
-                pump_state.status = "STOPPING" if pump_state.flow_rate > 1.0 else "OFF"
+                pump_state.status = "STOPPING" if pump_state.flow_rate > 0.1 else "OFF"
         if self.secondary_pump_active:
             total_flow = 0.0
             target_pressure = (
@@ -337,7 +337,7 @@ class Reactor:
                     pump_state.flow_rate, 0.0, dt, self.secondary_pump.spool_time
                 )
                 pump_state.pressure = state.secondary_loop.pressure
-                pump_state.status = "STOPPING" if pump_state.flow_rate > 1.0 else "OFF"
+                pump_state.status = "STOPPING" if pump_state.flow_rate > 0.1 else "OFF"
 
         if self.primary_relief_open:
             state.primary_loop.pressure = max(0.1, saturation_pressure(state.primary_loop.temperature_out))