diff --git a/src/HexManiac.Core/Models/Runs/OverworldSpriteListRun.cs b/src/HexManiac.Core/Models/Runs/OverworldSpriteListRun.cs
index 516e76b0..18981021 100644
--- a/src/HexManiac.Core/Models/Runs/OverworldSpriteListRun.cs
+++ b/src/HexManiac.Core/Models/Runs/OverworldSpriteListRun.cs
@@ -89,7 +89,7 @@ namespace HavenSoft.HexManiac.Core.Models.Runs {
          if (height == 0) { height = width; adjustDimensions = true; }
          var tileWidth = (int)Math.Max(1, Math.Ceiling(width / 8.0));
          var tileHeight = (int)Math.Max(1, Math.Ceiling(height / 8.0));
-         while (adjustDimensions) {
+         while (adjustDimensions && pixelCount > 0) {
             adjustDimensions = false;
             while (tileWidth * tileHeight * 64 > pixelCount) {
                adjustDimensions = true;