diff --git a/game/LRInfantry.cpp b/game/LRInfantry.cpp
index ea2d291..493c2ca 100644
--- a/game/LRInfantry.cpp
+++ b/game/LRInfantry.cpp
@@ -100,6 +100,11 @@ void LRInfantryGob::Idle()
 	}
 }
 
+int LRInfantryGob::GetIdleCountdown()
+{
+    return (GetRandom() % 100) + 50; // somewhere between 8 & 12 seconds
+}
+
 int LRInfantryGob::ProcessStateMachineMessage(State st, Message *pmsg)
 {
 BeginStateMachine
diff --git a/game/MobileUnit.cpp b/game/MobileUnit.cpp
index 51ca4ad..f8374c5 100644
--- a/game/MobileUnit.cpp
+++ b/game/MobileUnit.cpp
@@ -50,8 +50,6 @@ int g_mpDirToDy[8] = { -1, -1, 0, 1, 1, 1, 0, -1 };
 AnimationData *g_panidMoveTarget;
 static AnimationData *s_panidVehicleExplosion;
 
-#define GetIdleCountdown() ((GetRandom() % 50) + 50)		// somewhere between 4 & 8 seconds
-
 const int kcFireCountdown = 6;	// 6 updates (~.5 secs)
 
 Path *MobileUnitGob::s_apathCached[kcPathsCache];
@@ -723,6 +721,11 @@ bool MobileUnitGob::IsAttackPointWithinFiringRangeOfTarget(UnitGob *puntTarget)
 	return IsTargetWithinRange(&wptAttack, puntTarget, m_pmuntc->tcFiringRange);
 }
 
+int MobileUnitGob::GetIdleCountdown()
+{
+    return (GetRandom() % 50) + 50; // somewhere between 4 & 8 seconds
+}
+
 // TUNE:
 
 const TCoord ktcVicinity = 5;
diff --git a/game/SRInfantry.cpp b/game/SRInfantry.cpp
index f69ce75..fa4a6be 100644
--- a/game/SRInfantry.cpp
+++ b/game/SRInfantry.cpp
@@ -99,6 +99,11 @@ void SRInfantryGob::Idle()
 	}
 }
 
+int SRInfantryGob::GetIdleCountdown()
+{
+    return (GetRandom() % 100) + 50; // somewhere between 8 & 12 seconds
+}
+
 int SRInfantryGob::ProcessStateMachineMessage(State st, Message *pmsg)
 {
 BeginStateMachine
diff --git a/game/ht.h b/game/ht.h
index c7cee0c..09fc47e 100644
--- a/game/ht.h
+++ b/game/ht.h
@@ -6691,6 +6691,8 @@ public:
 	bool IsMobile() secUnitGob;
 	bool IsStandingOnActivator() secUnitGob;
 
+    virtual int GetIdleCountdown() secUnitGob;
+
 	bool HasAttackTarget() {
 		return m_gidTarget != kgidNull;
 	}
@@ -7024,6 +7026,10 @@ public:
 	virtual bool Fire(UnitGob *puntTarget, WCoord wx, WCoord wy, WCoord wdx, WCoord wdy) secInfantryGob;
 	virtual void Idle() secInfantryGob;
 
+    // MobileUnitGob overrides
+
+    virtual int GetIdleCountdown() secInfantryGob;
+
 	// StateMachine methods
 
 	virtual int ProcessStateMachineMessage(State st, Message *pmsg) secInfantryGob;
@@ -7044,6 +7050,10 @@ public:
 	virtual bool Fire(UnitGob *puntTarget, WCoord wx, WCoord wy, WCoord wdx, WCoord wdy) secInfantryGob;
 	virtual void Idle() secInfantryGob;
 
+    // MobileUnitGob overrides
+
+    virtual int GetIdleCountdown() secInfantryGob;
+
 	// StateMachine methods
 
 	virtual int ProcessStateMachineMessage(State st, Message *pmsg) secInfantryGob;