diff --git a/driver/common.c b/driver/common.c
index bd439a3..05e93c1 100644
--- a/driver/common.c
+++ b/driver/common.c
@@ -210,7 +210,7 @@ uint32_t isLTformat(uint32_t bpp, uint32_t width, uint32_t height)
 {
 	uint32_t utileW, utileH;
 	getUTileDimensions(bpp, &utileW, &utileH);
-	return (width <= 4 * utileW || height <= utileH);
+	return (width <= 4 * utileW || height <= 4 * utileH);
 }
 
 //Textures in T format:
diff --git a/driver/copy.c b/driver/copy.c
index 583fd3a..8461fb9 100644
--- a/driver/copy.c
+++ b/driver/copy.c
@@ -1097,10 +1097,10 @@ VKAPI_ATTR void VKAPI_CALL rpi_vkCmdBlitImage(
 
 	for(uint32_t c = 0; c < regionCount; ++c)
 	{
-		uint32_t srcWidth = pRegions[c].srcOffsets[1].x - pRegions[c].srcOffsets[0].x;
-		uint32_t srcHeight = pRegions[c].srcOffsets[1].y - pRegions[c].srcOffsets[0].y;
-		uint32_t dstWidth = pRegions[c].dstOffsets[1].x - pRegions[c].dstOffsets[0].x;
-		uint32_t dstHeight = pRegions[c].dstOffsets[1].y - pRegions[c].dstOffsets[0].y;
+		uint32_t srcWidth = max(pRegions[c].srcOffsets[1].x - pRegions[c].srcOffsets[0].x, 1);
+		uint32_t srcHeight = max(pRegions[c].srcOffsets[1].y - pRegions[c].srcOffsets[0].y, 1);
+		uint32_t dstWidth = max(pRegions[c].dstOffsets[1].x - pRegions[c].dstOffsets[0].x, 1);
+		uint32_t dstHeight = max(pRegions[c].dstOffsets[1].y - pRegions[c].dstOffsets[0].y, 1);
 		uint32_t srcMipLevel = pRegions[c].srcSubresource.mipLevel;
 		uint32_t dstMipLevel = pRegions[c].dstSubresource.mipLevel;
 
diff --git a/driver/resource.c b/driver/resource.c
index 8c8d53f..79d6d1d 100644
--- a/driver/resource.c
+++ b/driver/resource.c
@@ -350,16 +350,6 @@ VKAPI_ATTR void VKAPI_CALL rpi_vkGetImageMemoryRequirements(
 			}
 		}
 
-		if(mipW < 4)
-		{
-			mipW = 4;
-		}
-
-		if(mipH < 4)
-		{
-			mipH = 4;
-		}
-
 		i->levelOffsets[c] = offset;
 
 		strides[c] = (mipW * bpp * max(i->samples, 1)) >> 3;