diff --git a/source/games/blood/src/eventq.cpp b/source/games/blood/src/eventq.cpp
index 99f11a7ec..b23d3859c 100644
--- a/source/games/blood/src/eventq.cpp
+++ b/source/games/blood/src/eventq.cpp
@@ -537,9 +537,9 @@ void evPostSector(sectortype* sect, unsigned int nDelta, CALLBACK_ID callback)
 	evPost_(nullptr, sectnum(sect), SS_SECTOR, nDelta, callback);
 }
 
-void evPostWall(int index, unsigned int nDelta, COMMAND_ID command)
+void evPostWall(walltype* wal, unsigned int nDelta, COMMAND_ID command)
 {
-	evPost_(nullptr, index, SS_WALL, nDelta, command);
+	evPost_(nullptr, wallnum(wal), SS_WALL, nDelta, command);
 }
 
 
diff --git a/source/games/blood/src/triggers.cpp b/source/games/blood/src/triggers.cpp
index 6e3e3504c..8122c1c11 100644
--- a/source/games/blood/src/triggers.cpp
+++ b/source/games/blood/src/triggers.cpp
@@ -84,7 +84,7 @@ bool SetWallState(walltype* pWall, int nState)
     pXWall->state = nState;
     evKillWall(wallnum(pWall));
     if (pXWall->restState != nState && pXWall->waitTime > 0)
-        evPostWall(wallnum(pWall), (pXWall->waitTime*120) / 10, pXWall->restState ? kCmdOn : kCmdOff);
+        evPostWall(pWall, (pXWall->waitTime*120) / 10, pXWall->restState ? kCmdOn : kCmdOff);
     if (pXWall->txID)
     {
         if (pXWall->command != kCmdLink && pXWall->triggerOn && pXWall->state)