diff --git a/SQCSim-common/chunk.cpp b/SQCSim-common/chunk.cpp
index 161775b..9f2e6f7 100644
--- a/SQCSim-common/chunk.cpp
+++ b/SQCSim-common/chunk.cpp
@@ -67,7 +67,7 @@ Chunk::Chunk(unsigned int x, unsigned int y, int64_t seed) : m_posX(x), m_posY(y
 				for (int iy = 0; iy < 14; ++iy) {
 					if (iz == 4)
 						if (GetBlock(ix, iy, iz) == BTYPE_AIR)
-							Structure(ix, iy, iz, 2);
+							Structure(ix, iy, iz, 1);
 				}
 			}
 	if (ratio == 5)