diff --git a/sp/src/game/server/hl2/npc_BaseZombie.cpp b/sp/src/game/server/hl2/npc_BaseZombie.cpp
index 1c5cde10..0799fcf6 100644
--- a/sp/src/game/server/hl2/npc_BaseZombie.cpp
+++ b/sp/src/game/server/hl2/npc_BaseZombie.cpp
@@ -787,7 +787,7 @@ bool CNPC_BaseZombie::ShouldBecomeTorso( const CTakeDamageInfo &info, float flDa
 HeadcrabRelease_t CNPC_BaseZombie::ShouldReleaseHeadcrab( const CTakeDamageInfo &info, float flDamageThreshold )
 {
 #ifdef MAPBASE
-	if ( m_iHealth <= 0 && !m_fIsHeadless )
+	if ( m_iHealth <= 0 && !m_fIsHeadless && !HasSpawnFlags(SF_ZOMBIE_NO_HEADCRAB_SPAWN))
 #else
 	if ( m_iHealth <= 0 )
 #endif
diff --git a/sp/src/game/server/hl2/npc_BaseZombie.h b/sp/src/game/server/hl2/npc_BaseZombie.h
index aa7541c1..16ca0db9 100644
--- a/sp/src/game/server/hl2/npc_BaseZombie.h
+++ b/sp/src/game/server/hl2/npc_BaseZombie.h
@@ -43,6 +43,7 @@ extern int AE_ZOMBIE_POUND;
 
 #ifdef MAPBASE
 #define SF_ZOMBIE_NO_TORSO ( 1 << 15 )
+#define SF_ZOMBIE_NO_HEADCRAB_SPAWN ( 1 << 16 )
 #endif