diff --git a/Minecraft.Client/Rendering/EntityRenderers/TileRenderer.cpp b/Minecraft.Client/Rendering/EntityRenderers/TileRenderer.cpp
index 30d05c2b3..4b248d31e 100644
--- a/Minecraft.Client/Rendering/EntityRenderers/TileRenderer.cpp
+++ b/Minecraft.Client/Rendering/EntityRenderers/TileRenderer.cpp
@@ -3582,9 +3582,10 @@ bool TileRenderer::tesselateCrossInWorld( Tile* tt, int x, int y, int z )
 
 	if (tt == Tile::tallgrass)
 	{
-	    __int64 seed = (x * 3129871) ^ (z * 116129781l) ^ (y);
-	    seed = seed * seed * 42317861 + seed * 11;
-	
+		// 4jcraft add a bunch of casts to prevent overflow (i pray to god)
+		int64_t seed = ((int64_t)x * 3129871) ^ ((int64_t)z * 116129781L) ^ ((int64_t)y);
+		seed = (int64_t)(((uint64_t)seed * (uint64_t)seed * 42317861ULL) + ((uint64_t)seed * 11ULL));
+
 		xt += ((((seed >> 16) & 0xf) / 15.0f) - 0.5f) * 0.5f;
 		yt += ((((seed >> 20) & 0xf) / 15.0f) - 1.0f) * 0.2f;
 		zt += ((((seed >> 24) & 0xf) / 15.0f) - 0.5f) * 0.5f;