diff --git a/library/PolyVoxCore/include/PolyVoxCore/RawVolumeSampler.inl b/library/PolyVoxCore/include/PolyVoxCore/RawVolumeSampler.inl
index 758e578d..39f51f3e 100644
--- a/library/PolyVoxCore/include/PolyVoxCore/RawVolumeSampler.inl
+++ b/library/PolyVoxCore/include/PolyVoxCore/RawVolumeSampler.inl
@@ -238,7 +238,7 @@ namespace PolyVox
 	template <typename VoxelType>
 	VoxelType RawVolume<VoxelType>::Sampler::peekVoxel0px1ny1nz(void) const
 	{
-		if( BORDER_LOWX(this->mYPosInVolume) && BORDER_LOWZ(this->mZPosInVolume) )
+		if( BORDER_LOWY(this->mYPosInVolume) && BORDER_LOWZ(this->mZPosInVolume) )
 		{
 			return *(mCurrentVoxel - this->mVolume->getWidth() - this->mVolume->getWidth() * this->mVolume->getHeight());
 		}