diff --git a/Source/astcenc_compress_symbolic.cpp b/Source/astcenc_compress_symbolic.cpp
index a93046a4551aa49ecde9beafbed61af4d0413e30..aa4341afdf2f4eeb2c8aad3f62053a17d13252b9 100644
--- a/Source/astcenc_compress_symbolic.cpp
+++ b/Source/astcenc_compress_symbolic.cpp
@@ -256,9 +256,8 @@ static bool realign_weights_undecimated(
 			float error_base = dot_s(color_diff      * color_diff,      error_weight);
 			float error_down = dot_s(color_diff_down * color_diff_down, error_weight);
 			float error_up   = dot_s(color_diff_up   * color_diff_up,   error_weight);
-
 			// Check if the prev or next error is better, and if so use it
-			if ((error_up < error_base) && (error_up < error_down) && (uqw < 64))
+			if ((error_up < error_base) && (error_up < error_down) && (uqw < 64)) // 64 is the max uqw value
 			{
 				dec_weights_uquant[texel] = static_cast<uint8_t>(uqw_up);
 				adjustments = true;
diff --git a/Source/astcenc_pick_best_endpoint_format.cpp b/Source/astcenc_pick_best_endpoint_format.cpp
index d3b9f6c296efe2857e9ecfc941d9a59606e1c0e0..0612adf6cb022f2deb33e8f71c9d85bf5385d15d 100644
--- a/Source/astcenc_pick_best_endpoint_format.cpp
+++ b/Source/astcenc_pick_best_endpoint_format.cpp
@@ -317,7 +317,7 @@ static void compute_encoding_choice_errors(
 
 	partition_metrics *pms = reinterpret_cast<partition_metrics *>(&blk.pms[0]);
 
-	if (!blk.is_constant_channel(3) || (partition_count != 1 && privateProfile == HIGH_QUALITY_PROFILE))
+	if (!blk.is_constant_channel(3) || (partition_count != 1 && privateProfile == HIGH_QUALITY_PROFILE)) //3:Alpha channel
 	{
 		compute_avgs_and_dirs_3_comp_rgb(pi, blk, pms);
 	}