diff --git a/src/game/level_update.c b/src/game/level_update.c
index c6de49c9..8aa73fc5 100644
--- a/src/game/level_update.c
+++ b/src/game/level_update.c
@@ -788,7 +788,7 @@ static void initiate_painting_warp_node(struct WarpNode *pWarpNode) {
  * Check is Mario has entered a painting, and if so, initiate a warp.
  */
 void initiate_painting_warp(s16 paintingIndex) {
-    if (gCurrentArea && gCurrentArea->paintingWarpNodes && gMarioState && gMarioState->floor && paintingIndex >= 0 && paintingIndex < MAX_PAINTING_WARP_NODES) {
+    if (gCurrentArea && gCurrentArea->paintingWarpNodes && gMarioState && gMarioState->floor && paintingIndex >= -1 && paintingIndex < MAX_PAINTING_WARP_NODES) {
         struct WarpNode *pWarpNode = paintingIndex == -1 ? get_painting_warp_node() : &gCurrentArea->paintingWarpNodes[paintingIndex];
 
         if (pWarpNode != NULL) {