diff --git a/src/main/java/gregapi/data/CS.java b/src/main/java/gregapi/data/CS.java
index b71529993..16805293f 100644
--- a/src/main/java/gregapi/data/CS.java
+++ b/src/main/java/gregapi/data/CS.java
@@ -2326,4 +2326,11 @@ public static class SFX {
 
 	, RES_PATH_IC2              = MD.IC2.mID.toLowerCase() + ":"
 	;
+
+	public static final HashSet<String> SHOULD_FLIP_NEG_Y_TEXTURES = new HashSet<>();
+
+	static {
+		SHOULD_FLIP_NEG_Y_TEXTURES.add("machines");
+		SHOULD_FLIP_NEG_Y_TEXTURES.add("overlays");
+	}
 }
diff --git a/src/main/java/gregapi/render/ITexture.java b/src/main/java/gregapi/render/ITexture.java
index d07482caa..a75604790 100644
--- a/src/main/java/gregapi/render/ITexture.java
+++ b/src/main/java/gregapi/render/ITexture.java
@@ -20,6 +20,7 @@
 package gregapi.render;
 
 import static gregapi.data.CS.*;
+import static gregapi.util.UT.shouldFlipNegYTextures;
 
 import org.lwjgl.opengl.GL11;
 
@@ -248,11 +249,11 @@ public static boolean doRenderYNeg(IIcon aIcon, RenderBlocks aRenderer, Block aB
 			if (aBlock.getRenderBlockPass() > 0) {
 				double tOldValue = aRenderer.renderMinY;
 				aRenderer.renderMinY -= (aRenderer.renderFromInside?-1:+1)*OFFSET_Y_NEG;
-				renderFixedNegativeYFacing(aIcon, aRenderer, aBlock, aX, aY, aZ);
+				renderFixedNegativeYFacing(aIcon, aRenderer, aBlock, aX, aY, aZ, aChangedBlockBounds);
 				aRenderer.renderMinY = tOldValue;
 				OFFSET_Y_NEG += OFFSET_ADD;
 			} else {
-				renderFixedNegativeYFacing(aIcon, aRenderer, aBlock, aX, aY, aZ);
+				renderFixedNegativeYFacing(aIcon, aRenderer, aBlock, aX, aY, aZ, aChangedBlockBounds);
 			}
 			return T;
 		}
@@ -285,13 +286,15 @@ public static boolean doRenderZNeg(IIcon aIcon, RenderBlocks aRenderer, Block aB
 			return T;
 		}
 		
-		public static void renderFixedNegativeYFacing(IIcon aIcon, RenderBlocks aRenderer, Block aBlock, int aX, int aY, int aZ) {
+		public static void renderFixedNegativeYFacing(IIcon aIcon, RenderBlocks aRenderer, Block aBlock, int aX, int aY, int aZ, boolean aChangedBlockBounds) {
 			if (aRenderer.hasOverrideBlockTexture()) aIcon = aRenderer.overrideBlockTexture;
 		//  double tMaxX1 = aIcon.getInterpolatedU(aRenderer.renderMaxX * 16.0);
 		//  double tMinX1 = aIcon.getInterpolatedU(aRenderer.renderMinX * 16.0);
 		//  double tMaxZ1 = aIcon.getInterpolatedV(aRenderer.renderMinZ * 16.0);
 		//  double tMinZ1 = aIcon.getInterpolatedV(aRenderer.renderMaxZ * 16.0);
-			
+
+			boolean shouldFlipTexture = shouldFlipNegYTextures(aIcon.getIconName(), aChangedBlockBounds);
+
 			double tMaxX1 = aIcon.getInterpolatedU(aRenderer.renderMaxX * 16.0);
 			double tMinX1 = aIcon.getInterpolatedU(aRenderer.renderMinX * 16.0);
 			double tMaxZ1 = aIcon.getInterpolatedV(aRenderer.renderMaxZ * 16.0);
@@ -358,21 +361,21 @@ public static void renderFixedNegativeYFacing(IIcon aIcon, RenderBlocks aRendere
 			if (aRenderer.enableAO) {
 				Tessellator.instance.setColorOpaque_F(aRenderer.colorRedTopLeft, aRenderer.colorGreenTopLeft, aRenderer.colorBlueTopLeft);
 				Tessellator.instance.setBrightness(aRenderer.brightnessTopLeft);
-				Tessellator.instance.addVertexWithUV(tMinX3, tMinY3, tMaxZ3, tMinX2, tMinZ2);
+				Tessellator.instance.addVertexWithUV(tMinX3, tMinY3, tMaxZ3, tMinX2, shouldFlipTexture ? tMinZ2 : tMaxZ2);
 				Tessellator.instance.setColorOpaque_F(aRenderer.colorRedBottomLeft, aRenderer.colorGreenBottomLeft, aRenderer.colorBlueBottomLeft);
 				Tessellator.instance.setBrightness(aRenderer.brightnessBottomLeft);
-				Tessellator.instance.addVertexWithUV(tMinX3, tMinY3, tMinZ3, tMinX1, tMaxZ1);
+				Tessellator.instance.addVertexWithUV(tMinX3, tMinY3, tMinZ3, tMinX1, shouldFlipTexture ? tMaxZ1 : tMinZ1);
 				Tessellator.instance.setColorOpaque_F(aRenderer.colorRedBottomRight, aRenderer.colorGreenBottomRight, aRenderer.colorBlueBottomRight);
 				Tessellator.instance.setBrightness(aRenderer.brightnessBottomRight);
-				Tessellator.instance.addVertexWithUV(tMaxX3, tMinY3, tMinZ3, tMaxX2, tMaxZ2);
+				Tessellator.instance.addVertexWithUV(tMaxX3, tMinY3, tMinZ3, tMaxX2, shouldFlipTexture ? tMaxZ2 : tMinZ2);
 				Tessellator.instance.setColorOpaque_F(aRenderer.colorRedTopRight, aRenderer.colorGreenTopRight, aRenderer.colorBlueTopRight);
 				Tessellator.instance.setBrightness(aRenderer.brightnessTopRight);
-				Tessellator.instance.addVertexWithUV(tMaxX3, tMinY3, tMaxZ3, tMaxX1, tMinZ1);
+				Tessellator.instance.addVertexWithUV(tMaxX3, tMinY3, tMaxZ3, tMaxX1, shouldFlipTexture ? tMinZ1 : tMaxZ1);
 			} else {
-				Tessellator.instance.addVertexWithUV(tMinX3, tMinY3, tMaxZ3, tMinX2, tMinZ2);
-				Tessellator.instance.addVertexWithUV(tMinX3, tMinY3, tMinZ3, tMinX1, tMaxZ1);
-				Tessellator.instance.addVertexWithUV(tMaxX3, tMinY3, tMinZ3, tMaxX2, tMaxZ2);
-				Tessellator.instance.addVertexWithUV(tMaxX3, tMinY3, tMaxZ3, tMaxX1, tMinZ1);
+				Tessellator.instance.addVertexWithUV(tMinX3, tMinY3, tMaxZ3, tMinX2, shouldFlipTexture ? tMinZ2 : tMaxZ2);
+				Tessellator.instance.addVertexWithUV(tMinX3, tMinY3, tMinZ3, tMinX1, shouldFlipTexture ? tMaxZ1 : tMinZ1);
+				Tessellator.instance.addVertexWithUV(tMaxX3, tMinY3, tMinZ3, tMaxX2, shouldFlipTexture ? tMaxZ2 : tMinZ2);
+				Tessellator.instance.addVertexWithUV(tMaxX3, tMinY3, tMaxZ3, tMaxX1, shouldFlipTexture ? tMinZ1 : tMaxZ1);
 			}
 		}
 		
diff --git a/src/main/java/gregapi/util/UT.java b/src/main/java/gregapi/util/UT.java
index df8737dac..4bbb5e579 100644
--- a/src/main/java/gregapi/util/UT.java
+++ b/src/main/java/gregapi/util/UT.java
@@ -3568,4 +3568,14 @@ public static boolean finish() {
 			return F;
 		}
 	}
+
+	public static boolean shouldFlipNegYTextures(String textureName, boolean aChangedBlockBounds){
+		int start = textureName.indexOf(":");
+		int stop = textureName.indexOf("/");
+		if (start != -1 && stop != -1) {
+			String textureGroup = textureName.substring(start + 1, stop);
+			return aChangedBlockBounds && (SHOULD_FLIP_NEG_Y_TEXTURES.contains(textureGroup)); // dirty hack, but works fine
+		}
+		return false;
+	}
 }