diff --git a/Source/missiles.cpp b/Source/missiles.cpp
index df1552069..63f28ab81 100644
--- a/Source/missiles.cpp
+++ b/Source/missiles.cpp
@@ -3839,7 +3839,7 @@ void MI_Rhino(MissileStruct &missile)
 	UpdateMissilePos(missile);
 	Point newPos = missile.position.tile;
 	if (!IsTileAvailable(monster, newPos) || (monster._mAi == AI_SNAKE && !IsTileAvailable(monster, newPosSnake))) {
-		MissToMonst(i, prevPos);
+		MissToMonst(missile, prevPos);
 		missile._miDelFlag = true;
 		return;
 	}
diff --git a/Source/monster.cpp b/Source/monster.cpp
index 8085c6065..991a37624 100644
--- a/Source/monster.cpp
+++ b/Source/monster.cpp
@@ -4769,19 +4769,16 @@ void PlayEffect(MonsterStruct &monster, int mode)
 #endif
 }
 
-void MissToMonst(int i, Point position)
+void MissToMonst(MissileStruct &missile, Point position)
 {
-	assert(i >= 0 && i < MAXMISSILES);
-
-	MissileStruct *miss = &Missiles[i];
-	int m = miss->_misource;
+	int m = missile._misource;
 
 	assert(m >= 0 && m < MAXMONSTERS);
 	auto &monster = Monsters[m];
 
-	Point oldPosition = miss->position.tile;
+	Point oldPosition = missile.position.tile;
 	dMonster[position.x][position.y] = m + 1;
-	monster._mdir = static_cast<Direction>(miss->_mimfnum);
+	monster._mdir = static_cast<Direction>(missile._mimfnum);
 	monster.position.tile = position;
 	M_StartStand(monster, monster._mdir);
 	if (monster.MType->mtype < MT_INCIN || monster.MType->mtype > MT_HELLBURN) {
diff --git a/Source/monster.h b/Source/monster.h
index d004ac81d..f48555614 100644
--- a/Source/monster.h
+++ b/Source/monster.h
@@ -275,7 +275,7 @@ void M_FallenFear(Point position);
 void PrintMonstHistory(int mt);
 void PrintUniqueHistory();
 void PlayEffect(MonsterStruct &monster, int mode);
-void MissToMonst(int i, Point position);
+void MissToMonst(MissileStruct &missile, Point position);
 bool IsTileAvailable(const MonsterStruct &monster, Point position);
 bool IsSkel(int mt);
 bool IsGoat(int mt);