diff --git a/src/p_lnspec.h b/src/p_lnspec.h
index 2f5a67810..f0942c4fd 100644
--- a/src/p_lnspec.h
+++ b/src/p_lnspec.h
@@ -104,6 +104,7 @@ typedef enum {
 	dDamage_LavaWimpy = 82,
 	dDamage_LavaHefty = 83,
 	dScroll_EastLavaDamage = 84,
+	hDamage_Sludge = 85,
 	Sector_Outside = 87,
 
 	// And here are some for Strife
diff --git a/src/p_spec.cpp b/src/p_spec.cpp
index eb42ef61a..915d4a508 100644
--- a/src/p_spec.cpp
+++ b/src/p_spec.cpp
@@ -452,6 +452,11 @@ void P_PlayerInSpecialSector (player_t *player, sector_t * sector)
 				P_DamageMobj (player->mo, NULL, NULL, 5, NAME_Slime);
 			break;
 
+		case hDamage_Sludge:
+			if (ironfeet == NULL && !(level.time&0x1f))
+				P_DamageMobj (player->mo, NULL, NULL, 4, NAME_Slime);
+			break;
+
 		case dDamage_SuperHellslime:
 			// SUPER HELLSLIME DAMAGE
 		case dLight_Strobe_Hurt:
diff --git a/wadsrc/static/xlat/defines.i b/wadsrc/static/xlat/defines.i
index 648679894..b72641d30 100644
--- a/wadsrc/static/xlat/defines.i
+++ b/wadsrc/static/xlat/defines.i
@@ -135,6 +135,7 @@ enum
 	dDamage_LavaWimpy = 82,
 	dDamage_LavaHefty = 83,
 	dScroll_EastLavaDamage = 84,
+	hDamage_Sludge = 85,
 	Sector_Outside = 87,
 
 	// And here are some for Strife
diff --git a/wadsrc/static/xlat/heretic.txt b/wadsrc/static/xlat/heretic.txt
index da4d103a5..8a2b696bc 100644
--- a/wadsrc/static/xlat/heretic.txt
+++ b/wadsrc/static/xlat/heretic.txt
@@ -18,7 +18,7 @@ sector 2 = dLight_StrobeFast;
 sector 3 = dLight_StrobeSlow;
 sector 4 = dScroll_EastLavaDamage;
 sector 5 = dDamage_LavaWimpy;
-sector 7 = dDamage_Nukage;
+sector 7 = hDamage_Sludge;
 sector 8 = dLight_Glow;
 sector 9 = SECRET_MASK nobitmask;
 sector 10 = dSector_DoorCloseIn30;