diff --git a/src/ActorMultiVertex.cpp b/src/ActorMultiVertex.cpp
index 3146fecbf9..78b8e0ce33 100644
--- a/src/ActorMultiVertex.cpp
+++ b/src/ActorMultiVertex.cpp
@@ -1049,13 +1049,13 @@ public:
 			p->GetStateData(ValidStateIndex(p, L, 1));
 		lua_createtable(L, 2, 0);
 		lua_createtable(L, 4, 0);
-		lua_pushnumber(L, state.rect.left * width_ratio);
+		lua_pushnumber(L, static_cast<lua_Number>(state.rect.left) * width_ratio);
 		lua_rawseti(L, -2, 1);
-		lua_pushnumber(L, state.rect.top * height_ratio);
+		lua_pushnumber(L, static_cast<lua_Number>(state.rect.top) * height_ratio);
 		lua_rawseti(L, -2, 2);
-		lua_pushnumber(L, (state.rect.right - width_pix) * width_ratio);
+		lua_pushnumber(L, (static_cast<lua_Number>(state.rect.right) - width_pix) * width_ratio);
 		lua_rawseti(L, -2, 3);
-		lua_pushnumber(L, (state.rect.bottom + height_pix) * height_ratio);
+		lua_pushnumber(L, (static_cast<lua_Number>(state.rect.bottom) + height_pix) * height_ratio);
 		lua_rawseti(L, -2, 4);
 		lua_rawseti(L, -2, 1);
 		lua_pushnumber(L, state.delay);