diff --git a/src/microbe_stage/systems/MicrobeAISystem.cs b/src/microbe_stage/systems/MicrobeAISystem.cs
index ae5ab4dd35..301e8abfde 100644
--- a/src/microbe_stage/systems/MicrobeAISystem.cs
+++ b/src/microbe_stage/systems/MicrobeAISystem.cs
@@ -343,7 +343,7 @@ private void ChooseActions(in Entity entity, ref MicrobeAI ai, ref CompoundAbsor
 
         if (ai.ATPThreshold > MathUtils.EPSILON)
         {
-            if (atpLevel < atpLevel * ai.ATPThreshold)
+            if (atpLevel < compounds.GetCapacityForCompound(Compound.ATP) * ai.ATPThreshold)
             {
                 if (cellHealth.CurrentHealth > 2 * Constants.ENGULF_NO_ATP_DAMAGE)
                 {