diff --git a/src/p_mobj.cpp b/src/p_mobj.cpp
index 7ec1224db..7e863a825 100644
--- a/src/p_mobj.cpp
+++ b/src/p_mobj.cpp
@@ -4864,14 +4864,15 @@ void P_SpawnBlood (fixed_t x, fixed_t y, fixed_t z, angle_t dir, int damage, AAc
 			while (cls != RUNTIME_CLASS(AActor))
 			{
 				FActorInfo *ai = cls->ActorInfo;
+				int checked_advance = advance;
 				if (ai->OwnsState(th->SpawnState))
 				{
-					for (; advance > 0; --advance)
+					for (; checked_advance > 0; --checked_advance)
 					{
 						// [RH] Do not set to a state we do not own.
-						if (!ai->OwnsState(th->SpawnState + advance))
+						if (ai->OwnsState(th->SpawnState + checked_advance))
 						{
-							th->SetState(th->SpawnState + advance);
+							th->SetState(th->SpawnState + checked_advance);
 							goto statedone;
 						}
 					}