diff --git a/src/server/scripts/Northrend/Naxxramas/boss_grobbulus.cpp b/src/server/scripts/Northrend/Naxxramas/boss_grobbulus.cpp
index 171593e95..4e3daaa53 100644
--- a/src/server/scripts/Northrend/Naxxramas/boss_grobbulus.cpp
+++ b/src/server/scripts/Northrend/Naxxramas/boss_grobbulus.cpp
@@ -25,7 +25,6 @@
 #include "SpellScriptLoader.h"
 #include "naxxramas.h"
 
-
 using namespace Grobbulus;
 
 // no custom changes has been made for mod-playerbot other then placing
@@ -37,4 +36,5 @@ void AddSC_boss_grobbulus()
     new boss_grobbulus_poison_cloud();
     RegisterSpellScript(spell_grobbulus_mutating_injection_aura);
     RegisterSpellScript(spell_grobbulus_poison);
+    RegisterSpellScript(spell_grobbulus_slime_spray);
 }