diff --git a/shader_deblocking/README.md b/shader_deblocking/README.md
index ec3e24a..2a7a914 100644
--- a/shader_deblocking/README.md
+++ b/shader_deblocking/README.md
@@ -72,9 +72,9 @@ Many variations and optimizations of this basic idea are possible.
 ![Edge Vis](screenshots/edge_vis.png)
 ![Edge Vis 2](screenshots/edge_vis2.png)
 
-This screenshot shows how the pixel shader computes texture block boundaries in effective mipmap space. To see this visualization, press '1' to enable deblocking, then '2' to enable block edge visualization. Only white areas in this visualization are modified by this shader, leaving the inner block texels unmodified.
+These screenshots shows how the pixel shader computes texture block boundaries in effective mipmap space. To see this visualization, press '1' to enable deblocking, then '2' to enable block edge visualization. Only white areas in this visualization are modified by this shader, leaving the inner block texels unmodified.
 
-Obviously, it's crucial that the block size passed into the shader via constants exactly matches the ASTC texture's block size.
+Obviously, it's crucial that the block size passed into the shader via constants exactly matches the ASTC texture's block size, or the filtering applied won't align with the actual ASTC block artifacts.
 
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